I feel this. I suffered from social anxiety for many years and its only in last few years that I was able to overcome it. I don’t have the cure but I can telm you what has helped with me. I got really bad palipitations and sweats at even the thought of meeting someone new.
But what helped me was grounding myself as much as possible even if its slipping off my shoes and walking on the grass whenever I have a chance. Talk therapy can also help. There could be something there that is dormat in your subconscious that is causing you to feel this way that you need to face and address. For me personally , I found it was caused in my past when someone took advantage of me whilst I was high and I had blocked it out.
With magick you can ask for their help in your confidence with it and ask them to help reduce the fear and anxiety you feel.
Last but not least,what helped me was not giving a fuck. Literally. Like in my head I use to get it so built up with ‘what ifs’ when being around other people. But I just started getting a ‘fuck it’ mindset with it all. And whenever I start to feel that panicky anxiety creep up to this day I shut it down with the ‘fuck it’ mindset.
Hope any of this makes sense to you and helps a bit
You got this.