Building your own newsletter should sit at the heart of any digital comms. Social media as the layer above with copious video and photography, but always having the call to action to sign up for the newsletter. You should “own” your audience contact details, rather than optimise for followers on proprietary networks that you need to continually pay to reach.
You should also own your own payment gateway, be that for patronage or content subscriptions or ticket selling. Luckily with a little bit of upfront effort this is easy to do with something like Stripe and will set you up for long term financial independence and viability.
A lot of old-media organisations have found some success in selling "access", you might also be able to find subscription-paying patrons who get special privileges beyond the casual audience member: attending rehearsals, going backstage after shows, or even attending classes themselves to get closer to the action.
There's also good old-fashioned sponsorship — local brands or wealthy individuals who are happy to contribute to your mission in exchange for billing in your promotional materials and physical spaces.
You should also own your own payment gateway, be that for patronage or content subscriptions or ticket selling. Luckily with a little bit of upfront effort this is easy to do with something like Stripe and will set you up for long term financial independence and viability.