Heeellp

Okay so I'm new to DBD and I reaaally want to get into playing killer (specifically Jigsaw and Myers or whatever they're called in game I think like Pig and Face or something) but I just need like a rundown of what things mean what and like what's the whole game like. Cause I've been trying to find out on my own but it's so confusing like at one point Survivors were apparently broken or something and now it's the killers who are in a better spot? But some are trash? I'm just generally confused so any information could really be useful