u/Far-Pace-4175

I recently bought a MacBook Air M1 A2337 off marketplace place a few months ago it ran perfect for like 2 months then the keyboard started having issues it was working then not working for a few days while also the trackpad was a bit glitchy just feels slow, and now the keyboard has stopped working entirely and I am unable to log into the mac as I can’t enter my password, anyone have any ideas of what this issue could be?