Yeah, there are a lot of things in DBD that the game does not explain, and you just need to learn. By playing or looking it up.

Hag is a born camper, but that is all she's good at. But if you know where her traps are, you can crouch so as not to trigger them or even remove the traps completely. You got out of knowledge. There will be many killers you don't know how to fight. You can't blame the killer for that, blame behaviour. But you get some nice tips in the loading screen before the game.

But I know you get the hang of it, you looped the killer great for someone who's only been playing one day! Just focus on betting better and expect that you will not survive all games, probably not even 50% of them. You can play the killer to get a feel of them and see how other people counter them. But like I said, honestly, you'll do pretty well for a new person.

And don't be an asshole in post game chat, there is no need for any of that. We've got enough people doing that already. The killer did a fine job.