So it looks like the touchpad problem is a known issue with that particular model. A web search turned up an Arch Linux forum post from 2017 with the same issue. Unfortunately, there was no solution posted.
Your touchpad shows up as a PS/2 device, right? I have a ThinkPad A475 with a PS/2 trackpad that won’t function at all in Linux unless I add i8042.reset as a GRUB argument.
Maybe see if that helps?
If you enter it in at boot time it’s not permanent, so it’ll either work or it won’t, but it shouldn’t break anything.