Having problems accessing the game modes

I have three bugs to report one is that whenever I join the game or like start match it doesn't let me it doesn't even let me choose game modes after the update and my game stuttering a lot before the update it wasn't stuttering at all but now it's unplayable. There is also another issue whenever I am playing the game I don't know what happens but my game crashes mid match like it throws me out of match and that's it doesn't tell me like What's wrong and when I start the match again it isn't let me it just keeps giving me errors and stuff but when I restart my game it's works completely fine

Please fix these issues as soon as possible