I seen my share of TG-friendly gay bars in several big towns. I ventured there dress according to my external organs just to "case" the places, to see if I can come to drink and dance wearing clothing appropriate to my gender.
What I found was a bunch of dirty and smelling places full of "seeding" looking people. My alarms went off, and I never venture to those laces in any mode. Yuk!
I think we could guide you better if you could provided us with information regarding what you would like to do (sing, dance, comedy, play music, etc).
In my neck of the wood there are several piano-bars, where for a nominal fee, you can sign and play the piano or partner with a piano-playing partner; of course the success would depend of the quality of your act and your presentation.
If you are serious about a career, I would suggest you to stay aawy from the gay bars least you be type-caste as a drag performer
Best,
Kate