Maybe you should try signing up for Partners-In-Torah. It’s a really good program and it sounds like it might be just the thing for you. They set you up with a mentor whom you learn with over the phone once a week. As an introvert, that would be a really good set up for you. At the same time, you would be making a connection with someone, and if things work out, she might have you over for Shabbos or Holidays or help you find a way to be part of a community.
And in terms of your observance level, you can just be yourself. They have people with all levels of observance.