how do i help myself?(please read)

okay to start ive never been diagnosed with anything but all my life since i was a kid i used to say i ws "anti-social","shy" & "introverted" now all my mind lies on is social anxiety. this really showed up for me today because i had a bad day at school and ended up crying a lot. so many teachers came up to me to try to helo but i couldnt get my words out, i have no friends because im quiet and even when i do want to make a friend i cant get myself to get up and talk or introduce myself to them. afterwards my hearts racing. and forbid someone notices im quiet tears immediately stream down my face without a second thought. its not even like i really care but i cry every. single. time. without fail.."talk louder" tears. i feel weak and i used to be even worse before this and many people got angry with me. i was too nervous to say thank you when someone dropped me off and ended up leaving without saying anything, i wouldnt say thank you to anyone in general. because i was too nervous, i didnt know what to do when cashing in stuff. i now know and do those things with a bit more ease. but i still cant get rid of this part of me in school. i transfered alot..no friends. quiet. and peers and teachers all find me rude because of my quiet demeanor i feel like its ruining my life because the truth is it really is. i yearn for friends outside my phone, to have a "real" life but i always crumble at the slightest critical comment and crawl back to my device for comfort, im tired of crying. and i wish i was different but no matter how much i try i cant get past the school stage. im crying right now writing this..i just want help and it wont work with practice i feel like the only thing that could help me is medication. i dont know how itd work or if but im in emotional pain every day because of this stupid thing..i dont even know what to call it. my family tells me nothing might be wrong with me but it doesnt feel that way and im really hurting. theres even nice people i wanna befriend but i cant..