How to keep friends?

Hello! I've been having tons of issues with friends lately and honestly, I've never ever kept a friend for more than a year. I recently started chatting more on Discord and in games trying it make new friends, and theres always this cycle that I can't break. I find a friend, I add them, everything goes well for about a month or two, then they just fall off. I know I am super clingy because of this, but I am trying to keep a little distance, I'm just super lonely. But most of the time it just feels like im valued a lot less compared to my friend's other friends, even when I've known them longer and are closer to them. Any advice?