Relationship help with a low self esteem

My boyfriend and I have been dating for 2 months now, he has his hobbies and I have mine, and there are days where we do each others hobbies you know, but now one of his hobbies is pool 🎱 and there are days where I go with him to support and all, but now there are also days where we both go for fun to play, but every time we go for fun, his friends are always there and other brilliant players, and he always play against them for practice etc and I just sit there and watch, he only asks me to play if no one wants to play against him. Like I'm a side option if no one is there, and I feel so left out. I sat there for like 4+ hours watching him play against other people, and he did not even ask me once if I'd like to play, yes he's good at it and I'm not that good, but he makes me feel like I'm not good enough to play against because he always beats me obviously so he only wants to play against people who can beat him. And then I get bored of just sitting there watching for more than 3 hours, and then I get tired and I tell him I'm tired but then he gets upset at me being tired and bored for so long...he just makes me think I'm not good enough...like we go for fun in hopes to play with him alone and spend some time together 😪but he never really deep down wants to play with me...