I don't know much about finding a theatre, but there's a community drama group where I live that uses places other than theatres, like pubs and colleges and community centres.
I also know a musician who performs at a theatre run on a not-for-profit community basis where they do dramas etc. You can reach a really wide audience without having to find what I'll call a standard profit-making theatre, which makes it cheaper to put on a production.
Also, with Youtube, zoom etc., if you're trying to get a message across rather than making a profit, you can reach lots of people.
But whilst I know the theory of that, I've never put on a drama, so if you're putting one together, you need someone who's got the initiative and connections to actually do it.