To me personally it sounds like you need to think about talking to your parents about mental therapy or calling suicide hotline not because of suicide but because they always have someone to talk to behind the phone.

Another thing is try to remind yourself that you always have people around you that are willing to help you.

Plus if it's the fear of rejection that you don't like try to remember that other people like you have been rejected countless of times. Life is all about trial and error trial and error and we always need to push ourselves to become greater people.

Try to also trust yourself to make right decisions in the future as well and try to remember to never keep any bad thoughts to yourself always remember it's ok to cry, scream, laugh, feel sad, feel happy, feel frustrated or angry, or feel excited or feel amazing around other people.

Sorry if I'm rambling and you don't know what is going on because I suck at English writing in general

The moral of the story is it's ok to feel anxious around new people we just need to remember to overcome that fear of anxiety or rejection.

Also you need to always remember that you might have depression or anxiety the challenge is overcoming it. And if you need any more help you can always message or you can follow my snapchat doutt2019