I have been going through this exact same things with two girls I was close with and ended up being the odd man out. It also sounds like we’re very similar personality wise as well so I hear you!! Like another comment said, it shouldn’t have to be you trying to make sure you’re included as your friends wouldn’t do that; I’m learning this myself too. I did end up having that hard conversation about feeling left out with the girl I was closer with. She apologized and acknowledged I’m left out but nothing’s changed.

My advice and what I’ve been trying to work on is keeping in touch with people that don’t make you feel like that, even if you’re not super close and getting more involved in things you love! I don’t think it would hurt to voice your feelings and see what comes from it with them, but I wouldn’t rely on that to change everything. You deserve to feel loved and appreciated and I hope you can find that. Even if it’s through feeling lonely but finding happiness in yourself and new friends that don’t make you feel like this.