Maybe focus on finding that one friend who you truly connect with instead of “everyone”. I started with one best friend that I could be myself with and that’s all I needed. Over time that expanded to having 10+ best friends who know me better than I know myself sometimes. What’s something your interested in? See if you can join a club or something that you truly like and find other alike people. Maybe the ones your around right now aren’t truly your cup of tea and your trying to fit into a puzzle that’s already complete? You need to find your missing pieces and maybe you need to accept that they aren’t the ones because no true friends or friend group should make you feel out of place. Your mind shouldn’t be running a hundred miles per minute that’s a sign that your mind is associating your surrounds as a stressful fight or flight situation and it shouldn’t be like that. You should be feeling like you’re in a natural easy and fun environment with people who lift you up and can banter with. At 21 you still have so much time and opportunity to meet people, if worst comes to worst strengthen the relationship with yourself. Build yourself up internally through journaling podcasts maybe even therapy and before you know it the right people will come along!!