Introversion, shy friends please please help ?

okay so i really really need your help, i just cant handle this anymore. So im a soph in hs and made varsity cheerleading in august. i felt intimidated by a lot of the girls i always thought they were better than me. I became quieter and more contentious of my actions because they werent that warm. as the year went on i started question what was wong with me? im pretty but dont have that many friends and dont really hang out with guys. i had some really bad depression crying spells anxiety. for aabout a month i would come home everyday and cry. i did make more friends this year btw. but at the same time i hate myself. i want to be social and happy. like i dont know if i am introvered or i have just started obsessing about myself? i can be outgoing but then my head gets in the way. i want to be outgoing confident and not over think things and live happily. maybe im just introverted? or am i shy? this is so hard. i wnat to be free of all this and not overthink things so much. i want to start living life like myself not worrying. honestly, if i have to live this way the rest of my life it might not be worth it. thoughts opinions please help?