I'm thinking of old friends not leaving me alone
What bothers you about old friends staying in touch with you?
I just believe you will make different friends down the line.
People can grow apart or no longer put equal effort and care into the relationship, so it's okay to go with your gut and cut it off. Just be up front and honest with them rather than ghosting them.
I hear that.
Exactly, friends will come and go. It's hard to find true friends, and making comparisons is never a solution. You need to just go out there and socialize with more people so you can filter out acquaintances and real friends that you want to keep for a long time.