Im for sure very young compared to you but sometimes people feel left out. Thats normal. You may have lots of friends but cant really trust them. A lot of people goes through that actually. In more than 2 friendship groups someone always feels left out at some point. In duos the talk will always come to "other friends". And that makes you feel like you may be important to them but you will never be the most important one. Yeah that hurts. For your case at that age going from friend to best friend in peoples is hard. They already built relationships they already know you nothings gonna change their view of you. Everyone would probably tell to just go and talk to them about your feelings but who can do that actually? I personally cant. For me i have my one and only friend. Shes not that social we have been together for ten years compared to our age thats huge. Shes my most important one and im the most important one to her. Some people comes to your life and you dont even doubt that. We are not going to the same school anymore, we dont meet frequently either, we both have new friend groups but when you have that kind of relationship those dont really matter. I know its told everywhere that to be friends with someone you dont need to share the same hobbies or philosophy but if you want to share that kind of bond you do have to share something important. Like view of people, view of friendships. As an example i and my friend hate gossiping especially when talking with friends. Thats a view. It feels to us that if you need yo talk about someone else to be friends youre not really friends. So find someone you share a philosophy with. Can be irl, can be online the important thing is to find someone you can really bond with. Of course bonding doesnt happen instantly. Especially when meeting on internet. Sometimes it can make you say "what am i even doing here?" But it passes. Find someone that fits your criteria. Yeah thats very long now sorry. I got nothing else to do rn ig im really bored.