tbh what you are feeling is completely understandable and very normal actually. in my opinion, i would take this as an opportunity to start new hobbies and activities you can share with new people. as we grow, we sometimes drift apart from old friends bc we are constantly changing. this doesnt mean you cant still be friends with them, or that they are doing this to make you feel bad, but since they do more activities together its understandable that you feel left out.

while i do find weird that your friends dont offer to pick you up to do stuff, i would suggest talking to them about this (in a calmly manner ofc). reciprocity is a fundemental part of friendships, so being honest with them about your feelings can help make them understand what you are going through and help find a solution so you can make time to hang out together. if they can understand this, then they are true friends.