How to set scroll speed on thinkpad touchpad?

I read some “article” about it but i cant understan.

[i3hunor@HunorT480 xorg.conf.d]$ xinput list-props 12
Device 'Synaptics TM3276-022':
	Device Enabled (187):	1
	Coordinate Transformation Matrix (189):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	Device Accel Profile (323):	1
	Device Accel Constant Deceleration (324):	2.500000
	Device Accel Adaptive Deceleration (325):	1.000000
	Device Accel Velocity Scaling (326):	12.500000
	Synaptics Edges (327):	77, 1863, 70, 1227
	Synaptics Finger (328):	25, 30, 0
	Synaptics Tap Time (329):	180
	Synaptics Tap Move (330):	102
	Synaptics Tap Durations (331):	180, 180, 100
	Synaptics ClickPad (332):	1
	Synaptics Middle Button Timeout (333):	0
	Synaptics Two-Finger Pressure (334):	282
	Synaptics Two-Finger Width (335):	7
	Synaptics Scrolling Distance (336):	46, 46
	Synaptics Edge Scrolling (337):	0, 0, 0
	Synaptics Two-Finger Scrolling (338):	1, 1
	Synaptics Move Speed (339):	1.000000, 1.750000, 0.085727, 0.000000
	Synaptics Off (340):	1
	Synaptics Locked Drags (341):	0
	Synaptics Locked Drags Timeout (342):	5000
	Synaptics Tap Action (343):	0, 0, 0, 0, 0, 0, 0
	Synaptics Click Action (344):	1, 3, 2
	Synaptics Circular Scrolling (345):	0
	Synaptics Circular Scrolling Distance (346):	0.100000
	Synaptics Circular Scrolling Trigger (347):	0
	Synaptics Circular Pad (348):	0
	Synaptics Palm Detection (349):	0
	Synaptics Palm Dimensions (350):	10, 200
	Synaptics Coasting Speed (351):	20.000000, 50.000000
	Synaptics Pressure Motion (352):	30, 160
	Synaptics Pressure Motion Factor (353):	1.000000, 1.000000
	Synaptics Grab Event Device (354):	0
	Synaptics Gestures (355):	1
	Synaptics Capabilities (356):	1, 0, 0, 1, 1, 1, 0
	Synaptics Pad Resolution (357):	20, 20
	Synaptics Area (358):	0, 0, 0, 0
	Synaptics Soft Button Areas (359):	970, 0, 1063, 0, 0, 0, 0, 0
	Synaptics Noise Cancellation (360):	11, 11
	Device Product ID (315):	1739, 0
	Device Node (314):	"/dev/input/event8"

inix Fazy
[i3hunor@HunorT480 xorg.conf.d]$ inxi -Fazy
System:
  Kernel: 5.15.21-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.15-x86_64
    root=UUID=cc7be21e-d9d4-4881-841a-b047d2a1253a rw quiet
    udev.log_priority=3
  Desktop: i3 4.20.1 info: xfce4-panel vt: 7 dm: LightDM 1.30.0
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: LENOVO product: 20L6S1LV2F v: ThinkPad T480
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: LENOVO model: 20L6S1LV2F v: SDK0J40697 WIN
    serial: <superuser required> UEFI: LENOVO v: N24ET67W (1.42 )
    date: 11/17/2021
Battery:
  ID-1: BAT0 charge: 14.8 Wh (79.6%) condition: 18.6/23.9 Wh (77.6%)
    volts: 12.3 min: 11.4 model: LGC 01AV489 type: Li-poly serial: <filter>
    status: Not charging cycles: 83
CPU:
  Info: model: Intel Core i5-8350U bits: 64 type: MT MCP arch: Coffee Lake
    family: 6 model-id: 0x8E (142) stepping: 0xA (10) microcode: 0xEC
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 6 MiB desc: 1x6 MiB
  Speed (MHz): avg: 1700 high: 1701 min/max: 400/3600 scaling:
    driver: intel_pstate governor: performance cores: 1: 1700 2: 1700 3: 1700
    4: 1701 5: 1700 6: 1700 7: 1700 8: 1700 bogomips: 30409
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  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: Full generic retpoline, IBPB: conditional,
    IBRS_FW, STIBP: conditional, RSB filling
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort mitigation: TSX disabled
Graphics:
  Device-1: Intel UHD Graphics 620 vendor: Lenovo driver: i915 v: kernel
    bus-ID: 00:02.0 chip-ID: 8086:5917 class-ID: 0300
  Device-2: Chicony Integrated Camera (1280x720@30) type: USB
    driver: uvcvideo bus-ID: 1-8:3 chip-ID: 04f2:b604 class-ID: 0e02
    serial: <filter>
  Display: x11 server: X.Org 1.21.1.3 driver: loaded: modesetting
    alternate: fbdev,vesa display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x286mm (20.0x11.3")
    s-diag: 583mm (23")
  Monitor-1: eDP-1 res: 1920x1080 dpi: 158 size: 309x174mm (12.2x6.9")
    diag: 355mm (14")
  Message: Unable to show advanced data. Required tool glxinfo missing.
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Lenovo ThinkPad T480
    driver: snd_hda_intel v: kernel alternate: snd_soc_skl bus-ID: 00:1f.3
    chip-ID: 8086:9d71 class-ID: 0403
  Sound Server-1: ALSA v: k5.15.21-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.20 running: no
  Sound Server-3: PulseAudio v: 15.0 running: yes
  Sound Server-4: PipeWire v: 0.3.45 running: no
Network:
  Device-1: Intel Ethernet I219-LM vendor: Lenovo driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15d7 class-ID: 0200
  IF: enp0s31f6 state: down mac: <filter>
  Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel
    bus-ID: 03:00.0 chip-ID: 8086:24fd class-ID: 0280
  IF: wlp3s0 state: up mac: <filter>
Drives:
  Local Storage: total: 238.47 GiB used: 52.21 GiB (21.9%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Intel model: SSDPEKKF256G8L
    size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: L15P temp: 30.9 C scheme: GPT
Partition:
  ID-1: / raw-size: 118.93 GiB size: 116.5 GiB (97.96%)
    used: 52.18 GiB (44.8%) fs: ext4 dev: /dev/nvme0n1p5 maj-min: 259:5
  ID-2: /boot/efi raw-size: 100 MiB size: 96 MiB (96.00%)
    used: 25.3 MiB (26.3%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: file size: 8 GiB used: 41.8 MiB (0.5%) priority: -2
    file: /swapfile
Sensors:
  System Temperatures: cpu: 44.0 C pch: 39.5 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 233 Uptime: 3d 47m wakeups: 33 Memory: 7.51 GiB
  used: 3.59 GiB (47.7%) Init: systemd v: 250 tool: systemctl Compilers:
  gcc: 11.1.0 clang: 13.0.1 Packages: pacman: 1219 lib: 328 Shell: Bash
  v: 5.1.16 running-in: xfce4-terminal inxi: 3.3.12

I dont quite understand that now im using synaptics or libinput or what driver?

How could i slow down the two finger scroll speed?