I had the same passion, I ended up doing band promotions and management as a side gig.

I spent a couple months checking out local shows, then I found establishments that desired talent and facilitated getting the bands gigs, made a couple bucks and had fun.

There’s always the times bands need a fill in and they already know you, so extra bonus.

If you want to start cheap and easy, VFW’s and Legions have cheap halls and a liquor license