This might sound pedantic, but actually makes a big difference, mentally.

Introvert refers more to how you mentally recharge, rather than interactions. An introvert requires time alone to recharge, an extrovert needs time around people. Your more likely socially anxious, and possibly mentally underdeveloped for socialising.

By locking down where the problem actually is, it helps you figure out how to counter it. Social anxiety is quite common, with viable treatment methods. Social skills are learnt. You get them by practice. It’s a problem that is common for autistics, so the info from those corners of the internet could be helpful, even if you aren’t autistic.