i was literally the exact same way! you don't have to make an immediate good impression on everybody, it took me two years to make a lot of friends, actually. join some clubs, being in the band or a sports team is really good, etc. or, learn to be comfortable and confident with being shy. it sounds weird, but being ok with being the resident quiet kid in every class gives you some kinda status in a lot of classes, and people start to approach you! (maybe this isnt universal, but it works for me lolll) if you don't like the people at your school, turn to social media. fan accounts, art accounts, etc. are all a really fun way to make friends.