If you’re feeling unsure, you could call the places you’re considering and ask whoever answers the phone. You can get a feel for the vibe of a place through their tone, and you can ask their recommendation for who would be the best barber to give you the style you’re looking for. You’ll probably know right away based on a phone call if it’s a place you’d feel safe.

As an aside, and not to be a jerk- in the same way that it’s right and good for people to be respectful of transfolx and be mindful of language that denigrates, that street has to go both ways. It might just be awkward wording and a desire to distance yourself from the idea of girliness, but there’s something kinda messed up about the phrase “treated like a girl (or worse)”. What I think you were trying to get across is that you don’t want to be misgengered, you’d like to be recognized as masculine, and that you’d like to feel safe and included. That’s a valid thing to want and seek. There doesn’t have to be an implied hierarchy where “being treated as a girl” is slightly above “or worse”, and “being treated as a man” is at the top.