[2020] Just downloaded Vermintide 2 on the Xbox game pass and need some help understanding the game

I just started playing today and having difficulty with the game, I've played 10 or 15 games and failed every time. Is there a way to turn off weekly event? or do you have to play with it on? I googled it and couldn't find anything about it just weekly quests.

My starter sword is hitting enemies like a wet noodle and everyone keeps blowing each other up especially on lifts, I swear some people blow others up on purpose too >.>

As someone who just started playing getting my ass handed to me over and over by a mechanic that basically forces you to play at a higher difficulty straight from the get go is making it hard not only to learn the game but also to get into it and have fun. I just want to win one game T-T

Am I just suppose to lose and level up till I'm stronger to win a game or am I just too small brain for this game?