Adult Bat Mitzvah

Hi guys, so I am Jewish, was born jewish, celebrate all the high holidays, recognize Shabbat sometimes, I know a decent amount… but my parents never sent me to hebrew school. I really want to have that experience that everyone else did. I want to do the full adult Bat Mitzvah experience and learn under a rabbi and a synagogue. But im having a hard time finding where to look. My parents dont go to synagogue so I cant just talk to their rabbi. And I want to stick to learning under a conservative to modern orthodox organization. Alot of the orthodox synagogues I have emailed have said they dont do adult mitzvahs. I really want to get a jump start on my learning and Im just feeling a bit frustrated. There is also chabad… which im not opposed to, but I also just dont feel that orthodox. Any advice, or pointers?