I just installed Manjaro Kde 21.1 on my newly built pc but there is no option to connect to wireless internet, only wired internet.
I’ve been very excited to use Manjaro for a while so I hope this will get resolved 
One thing I tried is: System settings > Hardware config> Network Controller > Install network-r8168
Oh and I wanted to paste my inxi --admin --verbosity=7 --filter --no-host output but it says “you cant post links”
System:
Kernel: 5.8.6-1-MANJARO x86_64 bits: 64 compiler: N/A
parameters: BOOT_IMAGE=/boot/vmlinuz-5.8-x86_64
root=UUID=60fe6756-469a-4df1-8e23-bfb9d193f49f rw quiet apparmor=1
security=apparmor udev.log_priority=3
Desktop: KDE Plasma 5.19.5 tk: Qt 5.15.0 wm: kwin_x11 dm: SDDM
Distro: Manjaro Linux
Machine:
Type: Desktop Mobo: ASUSTeK model: TUF B450-PRO GAMING v: Rev X.0x
serial: <filter> UEFI: American Megatrends v: 2202 date: 07/14/2020
Memory:
RAM: total: 15.63 GiB used: 2.27 GiB (14.5%)
RAM Report:
permissions: Unable to run dmidecode. Root privileges required.
CPU:
Topology: 6-Core model: AMD Ryzen 5 3600 bits: 64 type: MT MCP
arch: Zen 2 family: 17 (23) model-id: 71 (113) stepping: N/A
microcode: 8701021 L2 cache: 3072 KiB bogomips: 86268
Speed: 3589 MHz min/max: 2200/3600 MHz boost: enabled
Core speeds (MHz): 1: 3590 2: 2051 3: 2196 4: 2197 5: 2051 6: 2201
7: 2196 8: 2195 9: 3588 10: 2053 11: 2051 12: 2193
Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2
bmi1 bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov
cmp_legacy constant_tsc cpb cpuid cqm cqm_llc cqm_mbm_local
cqm_mbm_total cqm_occup_llc cr8_legacy cx16 cx8 de decodeassists
extapic extd_apicid f16c flushbyasid fma fpu fsgsbase fxsr fxsr_opt ht
hw_pstate ibpb ibs irperf lahf_lm lbrv lm mba mca mce misalignsse mmx
mmxext monitor movbe msr mtrr mwaitx nonstop_tsc nopl npt nrip_save nx
osvw overflow_recov pae pat pausefilter pclmulqdq pdpe1gb perfctr_core
perfctr_llc perfctr_nb pfthreshold pge pni popcnt pse pse36 rdpid
rdpru rdrand rdseed rdt_a rdtscp rep_good sep sev sha_ni skinit smap
smca sme smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor svm
svm_lock syscall tce topoext tsc tsc_scale umip v_vmsave_vmload vgif
vmcb_clean vme vmmcall wbnoinvd wdt xgetbv1 xsave xsavec xsaveerptr
xsaveopt xsaves
Vulnerabilities: Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
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: Full AMD retpoline, IBPB: conditional,
STIBP: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: AMD Ellesmere [Radeon RX 470/480/570/570X/580/580X/590]
vendor: ASUSTeK driver: amdgpu v: kernel bus ID: 08:00.0
chip ID: 1002:67df
Display: x11 server: X.Org 1.20.8 compositor: kwin_x11 driver: amdgpu
FAILED: ati unloaded: modesetting alternate: fbdev,vesa display ID: :0
screens: 1
Screen-1: 0 s-res: 1024x768 s-dpi: 96 s-size: 270x203mm (10.6x8.0")
s-diag: 338mm (13.3")
Monitor-1: HDMI-A-0 res: 1024x768 hz: 75 dpi: 163
size: 160x90mm (6.3x3.5") diag: 184mm (7.2")
OpenGL: renderer: Radeon RX 580 Series (POLARIS10 DRM 3.38.0
5.8.6-1-MANJARO LLVM 10.0.1)
v: 4.6 Mesa 20.1.7 direct render: Yes
Audio:
Device-1: AMD Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590]
vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 08:00.1
chip ID: 1002:aaf0
Device-2: AMD Starship/Matisse HD Audio vendor: ASUSTeK
driver: snd_hda_intel v: kernel bus ID: 0a:00.4 chip ID: 1022:1487
Sound Server: ALSA v: k5.8.6-1-MANJARO
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: ASUSTeK driver: r8168 v: 8.048.03-NAPI modules: r8169
port: f000 bus ID: 03:00.0 chip ID: 10ec:8168
IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
WAN IP: <filter>
Drives:
Local Storage: total: 2.04 TiB used: 7.23 GiB (0.3%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda vendor: Seagate model: ST2000DM008-2FR102
size: 1.82 TiB block size: physical: 4096 B logical: 512 B
speed: 6.0 Gb/s rotation: 7200 rpm serial: <filter> rev: 0001
ID-2: /dev/sdb vendor: Western Digital model: WDS240G2G0A-00JH30
size: 223.57 GiB block size: physical: 512 B logical: 512 B
speed: 6.0 Gb/s serial: <filter> rev: 0400 scheme: GPT
Message: No Optical or Floppy data was found.
RAID:
Message: No RAID data was found.
Partition:
ID-1: / raw size: 223.27 GiB size: 218.77 GiB (97.98%)
used: 7.23 GiB (3.3%) fs: ext4 dev: /dev/sdb2 label: N/A
uuid: 60fe6756-469a-4df1-8e23-bfb9d193f49f
ID-2: /boot/efi raw size: 300.0 MiB size: 299.4 MiB (99.80%)
used: 312 KiB (0.1%) fs: vfat dev: /dev/sdb1 label: N/A
uuid: D777-5487
Swap:
Alert: No Swap data was found.
Unmounted:
Message: No unmounted partitions found.
USB:
Hub: 1-0:1 info: Full speed (or root) Hub ports: 10 rev: 2.0
speed: 480 Mb/s chip ID: 1d6b:0002
Device-1: 1-8:2 info: Cherry USB Optical Mouse type: Mouse
driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 1.5 Mb/s
chip ID: 046a:000c
Device-2: 1-10:3 info: Logitech Keyboard K120 type: Keyboard,HID
driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s
chip ID: 046d:c31c
Hub: 2-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1
speed: 10 Gb/s chip ID: 1d6b:0003
Hub: 3-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0
speed: 480 Mb/s chip ID: 1d6b:0002
Hub: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1
speed: 10 Gb/s chip ID: 1d6b:0003
Sensors:
System Temperatures: cpu: 42.8 C mobo: N/A gpu: amdgpu temp: 29 C
Fan Speeds (RPM): N/A gpu: amdgpu fan: 1164
Info:
Processes: 290 Uptime: 1h 06m Init: systemd v: 246 Compilers: gcc: N/A
Packages: pacman: 1158 lib: 315 flatpak: 0 Shell: Bash v: 5.0.18
running in: konsole inxi: 3.1.05Stating the obvious, you need a Wifi Chip to be able to connect to a Wifi network.
This board does not a have build in Wifi chip. Do you added a PCIE Wifi card or a Wifi USB stick to your system?
Oh… I’m sorry its my first time building a pc and i didnt know this, Thank you! 
No problem.
On desktop systems, you can usually see the antenna(s) on the back of the system.
Also a good starting point is the manual of the motherboard. If it doesn’t mention Wifi or how to attach the antenna(s), you need an extra card or device if you want to use Wifi.
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