Memo to performing artists: you and your peers have the power to create your own opportunities. And that rather than wait and hope that someone will cast you in something, all of you should get together and just make your own opportunity. Take that $5 you’d have spent on a jam, pool it with 6-8 other people, and rent a rehearsal room for 2-3 hours a week. Find some exercises you want to practice, or just do some scenework. If you want to do a show, practice scenes for a couple months, then get in on a show or find another group to split the bill with. Just do a 20-30 minute montage if all you want to do is scenes. Just do it, see what happens and learn from it.
As with many things, 80% of the challenge is just making yourself do it.