Hi! I just want to ask for some advice to help with my insecurities and overthinking.

My boyfriend loves to play online computer or mobile games. And I suck at it, whenever I get to play with him in some online games we always lose. Sometimes he will be pissed at me and yeah. So I don't play with him anymore, I just play the game by myself to train with some random people and same as him, he will get to play with random people, and some are girls that is great at playing the game.. I'm just so insecured that why can't I help him to win the game. I really want to be good at the games he play so we get to have fun together and so that he will not look at the other girls that is great at online games.