Touchpad not working with Acer Aspire a514-54

Hi! I’m using manjaro Linux with KDE Plasma DE. Everything works fine except the touchpad. But mouse is working fine. I checked in setting that the touchpad was enabled, but it still not working. I also checked that the touchpad is not disabled by F7 key. My laptop is Acer Aspire a514-54 with i5-1135G7. Here’s the output of xinput list :

xinput list

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ 2.4G Mouse                                id=10   [slave  pointer  (2)]
⎜   ↳ ETPS/2 Elantech Touchpad                  id=15   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Acer Wireless Radio Control               id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ HD User Facing: HD User Facing            id=11   [slave  keyboard (3)]
    ↳ Intel HID events                          id=12   [slave  keyboard (3)]
    ↳ Intel HID 5 button array                  id=13   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=14   [slave  keyboard (3)]
    ↳ Acer WMI hotkeys                          id=16   [slave  keyboard (3)]

And this is the general information from neofetch

neofetch

██████████████████  ████████   ------------------- 
██████████████████  ████████   OS: Manjaro Linux x86_64 
██████████████████  ████████   Host: Aspire A514-54 V1.26 
████████            ████████   Kernel: 5.15.74-3-MANJARO 
████████  ████████  ████████   Uptime: 19 mins 
████████  ████████  ████████   Packages: 1610 (pacman) 
████████  ████████  ████████   Shell: bash 5.1.16 
████████  ████████  ████████   Resolution: 1920x1080 
████████  ████████  ████████   DE: Plasma 5.25.5 
████████  ████████  ████████   WM: KWin 
████████  ████████  ████████   Theme: [Plasma], Breeze [GTK3] 
████████  ████████  ████████   Icons: [Plasma], Tela [GTK2/3] 
████████  ████████  ████████   Terminal: konsole 
                               CPU: 11th Gen Intel i5-1135G7 (8) @ 4.200GHz 
                               GPU: Intel TigerLake-LP GT2 [Iris Xe Graphics] 
                               Memory: 1890MiB / 7726MiB 

How to solve this?