Friendship Issues💔

I’ve had a close group of friends for over 10 years now. I have always felt like the black sheep amongst people because I wasn’t the type to always follow trends or go with the flow. About a year ago I started to feel this sad feeling that my friends aren’t the type of friends for me anymore. Long story short I had a realization (that took me almost a year to get to) that I can’t be friends with people that make me feel uncomfortable and left out even if it’s unintentional. I want to have a chat with them to let them know that I am no longer on the same page as them and I feel that this friendship has come to an end, but the last thing I need is drama. I really need some advice on how I can go about this situation because I don’t know what to do. I still have love for them but I just can’t be the friend that I used to be to them.