Wifi not working on HP Laptop

Hi, I am new to linux and this is my first time installing Manjaro.
My wifi is not working since installation. It worked fine on windows and ubuntu.
I guess the software for network adapter is not installed. output for inxi

System:
  Kernel: 5.10.41-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 
  root=UUID=fa1d89df-84a7-4b37-8cb0-6a22e420f31f rw quiet apparmor=1 
  security=apparmor udev.log_priority=3 
  Desktop: KDE Plasma 5.21.5 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM 
  Distro: Manjaro Linux base: Arch Linux 
Machine:
  Type: Laptop System: HP product: HP Laptop 15-da0xxx v: Type1ProductConfigId 
  serial: <filter> Chassis: type: 10 serial: <filter> 
  Mobo: HP model: 84AA v: 82.43 serial: <filter> UEFI: Insyde v: F.21 
  date: 07/25/2019 
Battery:
  ID-1: BAT1 charge: 5.8 Wh (14.5%) condition: 39.9/41.9 Wh (95.1%) 
  volts: 10.8 min: 11.6 model: COMPAL PABAS0241231 type: Li-ion 
  serial: <filter> status: Discharging 
Memory:
  RAM: total: 3.66 GiB used: 1.96 GiB (53.5%) 
  RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:
  Info: Dual Core model: Intel Celeron N4000 bits: 64 type: MCP 
  arch: Goldmont Plus family: 6 model-id: 7A (122) stepping: 1 microcode: 34 
  cache: L2: 4 MiB bogomips: 4378 
  Speed: 796 MHz min/max: 800/2600 MHz Core speeds (MHz): 1: 796 2: 796 
  Flags: 3dnowprefetch acpi aes aperfmperf apic arat arch_capabilities 
  arch_perfmon art bts cat_l2 cdp_l2 clflush clflushopt cmov constant_tsc 
  cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts erms est fpu fsgsbase 
  fxsr ht ibpb ibrs ibrs_enhanced ida intel_pt lahf_lm lm mca mce md_clear mmx 
  monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat pbe pclmulqdq pdcm 
  pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts rdpid rdrand rdseed rdt_a 
  rdtscp rep_good sdbg sep sha_ni smap smep ss ssbd sse sse2 sse4_1 sse4_2 
  ssse3 stibp syscall tm tm2 tsc tsc_adjust tsc_deadline_timer tsc_known_freq 
  umip vme x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr 
  Vulnerabilities: Type: itlb_multihit status: Not affected 
  Type: l1tf status: Not affected 
  Type: mds status: Not affected 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Enhanced IBRS, IBPB: conditional, RSB filling 
  Type: srbds status: Not affected 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: Intel UHD Graphics 605 vendor: Hewlett-Packard driver: i915 
  v: kernel bus-ID: 00:02.0 chip-ID: 8086:3185 class-ID: 0300 
  Device-2: Cheng Uei Precision Industry (Foxlink) HP TrueVision HD Camera 
  type: USB driver: uvcvideo bus-ID: 1-5:4 chip-ID: 05c8:03d2 class-ID: 0e02 
  Display: x11 server: X.Org 1.20.11 compositor: kwin_x11 driver: 
  loaded: intel unloaded: modesetting alternate: fbdev,vesa display-ID: :0 
  screens: 1 
  Screen-1: 0 s-res: 1366x768 s-dpi: 96 s-size: 361x203mm (14.2x8.0") 
  s-diag: 414mm (16.3") 
  Monitor-1: eDP1 res: 1366x768 hz: 60 dpi: 102 size: 340x190mm (13.4x7.5") 
  diag: 389mm (15.3") 
  OpenGL: renderer: Mesa Intel UHD Graphics 600 (GLK 2) v: 4.6 Mesa 21.1.2 
  direct render: Yes 
Audio:
  Device-1: Intel Celeron/Pentium Silver Processor High Definition Audio 
  vendor: Hewlett-Packard driver: snd_hda_intel v: kernel 
  alternate: snd_soc_skl,snd_sof_pci bus-ID: 00:0e.0 chip-ID: 8086:3198 
  class-ID: 0403 
  Sound Server-1: ALSA v: k5.10.41-1-MANJARO running: yes 
  Sound Server-2: JACK v: 0.125.0 running: no 
  Sound Server-3: PulseAudio v: 14.2 running: yes 
  Sound Server-4: PipeWire v: 0.3.28 running: no 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Hewlett-Packard driver: r8168 v: 8.048.03-NAPI modules: r8169 
  port: 2000 bus-ID: 01:00.0 chip-ID: 10ec:8168 class-ID: 0200 
  IF: eno1 state: down mac: <filter> 
  Device-2: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter 
  vendor: Hewlett-Packard driver: N/A modules: rtw88_8821ce port: 1000 
  bus-ID: 02:00.0 chip-ID: 10ec:c821 class-ID: 0280 
  IF-ID-1: enp0s21f0u1 state: unknown speed: N/A duplex: N/A mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: link 
  WAN IP: <filter> 
Bluetooth:
  Device-1: Xiaomi Mi/Redmi series (RNDIS) type: USB driver: rndis_host 
  v: kernel bus-ID: 1-1:5 chip-ID: 2717:ff80 class-ID: 0a00 serial: <filter> 
  Report: This feature requires one of these tools: hciconfig/bt-adapter 
  Device-2: Realtek Realtek Bluetooth 4.2 Adapter type: USB driver: btusb 
  v: 0.8 bus-ID: 1-4:3 chip-ID: 0bda:b00a class-ID: e001 serial: <filter> 
  Report: ID: hci0 rfk-id: 0 state: up address: N/A 
Logical:
  Message: No logical block device data found. 
RAID:
  Message: No RAID data found. 
Drives:
  Local Storage: total: 465.76 GiB used: 17.39 GiB (3.7%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/sda maj-min: 8:0 vendor: Western Digital 
  model: WD5000LPCX-60VHAT1 size: 465.76 GiB block-size: physical: 4096 B 
  logical: 512 B speed: 6.0 Gb/s rotation: 5400 rpm serial: <filter> rev: 1A03 
  scheme: GPT 
  Optical-1: /dev/sr0 vendor: hp model: DVDRW DA8AESH rev: XH6M 
  dev-links: cdrom 
  Features: speed: 24 multisession: yes audio: yes dvd: yes 
  rw: cd-r,cd-rw,dvd-r state: running 
Partition:
  ID-1: / raw-size: 465.46 GiB size: 457.09 GiB (98.20%) 
  used: 17.39 GiB (3.8%) fs: ext4 dev: /dev/sda2 maj-min: 8:2 label: N/A 
  uuid: fa1d89df-84a7-4b37-8cb0-6a22e420f31f 
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%) 
  used: 296 KiB (0.1%) fs: vfat dev: /dev/sda1 maj-min: 8:1 label: NO_LABEL 
  uuid: D6DA-2E05 
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) 
  ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) priority: -2 
  file: /swapfile 
Unmounted:
  Message: No unmounted partitions found. 
USB:
  Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 9 rev: 2.0 
  speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900 
  Device-1: 1-1:5 info: Xiaomi Mi/Redmi series (RNDIS) 
  type: Bluetooth,CDC-Data driver: rndis_host interfaces: 2 rev: 2.1 
  speed: 480 Mb/s power: 500mA chip-ID: 2717:ff80 class-ID: 0a00 
  serial: <filter> 
  Device-2: 1-4:3 info: Realtek Realtek Bluetooth 4.2 Adapter type: Bluetooth 
  driver: btusb interfaces: 2 rev: 1.1 speed: 12 Mb/s power: 500mA 
  chip-ID: 0bda:b00a class-ID: e001 serial: <filter> 
  Device-3: 1-5:4 
  info: Cheng Uei Precision Industry (Foxlink) HP TrueVision HD Camera 
  type: Video driver: uvcvideo interfaces: 2 rev: 2.0 speed: 480 Mb/s 
  power: 500mA chip-ID: 05c8:03d2 class-ID: 0e02 
  Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 7 rev: 3.0 speed: 5 Gb/s 
  chip-ID: 1d6b:0003 class-ID: 0900 
Sensors:
  System Temperatures: cpu: 49.0 C mobo: 20.0 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 143 Uptime: 9m wakeups: 3 Init: systemd v: 247 tool: systemctl 
  Compilers: gcc: N/A Packages: pacman: 1187 lib: 324 flatpak: 0 Shell: Bash 
  v: 5.1.8 running-in: konsole inxi: 3.3.04 

Any help would be appreciated.
Thanks in advance.

Welcome to the Manjaro Forum. Please read this:

Could you tell us what is the model of your wifi card? What is the output of lspci?

Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter

this is my Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter

Not working still.
here is my output for lspci

00:00.0 Host bridge: Intel Corporation Gemini Lake Host Bridge (rev 03)
00:00.1 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor Dynamic Platform and Thermal Framework Processor Participant (rev 03)
00:00.3 System peripheral: Intel Corporation Celeron/Pentium Silver Processor Gaussian Mixture Model (rev 03)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 605 (rev 03)
00:0e.0 Audio device: Intel Corporation Celeron/Pentium Silver Processor High Definition Audio (rev 03)
00:0f.0 Communication controller: Intel Corporation Celeron/Pentium Silver Processor Trusted Execution Engine Interface (rev 03)
00:12.0 SATA controller: Intel Corporation Celeron/Pentium Silver Processor SATA Controller (rev 03)
00:14.0 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:14.1 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:15.0 USB controller: Intel Corporation Celeron/Pentium Silver Processor USB 3.0 xHCI Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation Celeron/Pentium Silver Processor LPC Controller (rev 03)
00:1f.1 SMBus: Intel Corporation Celeron/Pentium Silver Processor Gaussian Mixture Model (rev 03)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter

please can someone help me fix this?

post an inxi output as directed a few days ago. i would not expect much assistance here without.

original post edited as directed.

Please post results of:
rfkill list

0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no

I am not an expert here, but Wireless LAN isn’t showing. Mine appears as follows:

rfkill list                                                              
0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

Is there a physical switch or fn combination that turns wireless on?

Can you please forward this to someone who can figure it out. I have also tried fetch the drivers via internet search. Still no luck.

See above post

I am not sure if there is any.

https://www.google.com/search?q=hp+84a+wireless+switch&oq=hp+84a+wireless+switch&aqs=chrome..69i57.20019j0j1&sourceid=chrome-mobile&ie=UTF-8

Method 2

I have tried this also. no progress. There is no switch to toggle wifi.

Check in UEFI/BIOS

Try installing a driver from AUR:

$ pamac build rtl8821ce-dkms-git