I need some help.

So I used to play this game back in about 2020-2021 and just back into it about a month ago. I wouldn't say I suck but I'm decently not that good and I can't do anything when playing killer I used to be very good but now it's like they buffed everything with the survivors and not killers.

Could someone either help me learnt survior or hopnin a custom and teach me how to get better like I was?