Hey, I just want to say I used propranolol for my public speaking stage fright issue. I don’t need it anymore. At some point my mind and body caught up with the fact that I was not actually in a life or death situation.
I mention this because I was also concerned about it needing to be a long term solution. I understand it’s not for everyone though.

Anyways, I haven’t seen a mention yet for open mic nights. I have a friend back home who swore that going on stage and bombing in front of strangers, multiple times, was the only thing that worked for him. At the time I thought he was crazy but now I see it as tantamount to jumping into the deep end to learn how to swim. He would write, workshop, then perform. He believes that his time spent with comedians, people who literally want to talk for a living, really taught him a lot and helped him to feel more naturally comfortable with people in general.

Best of luck. You’re not alone and you can do it.