If I were you, I would avoid guys who aren't fluent in English so you don't end up with any miscommunication, and I would probably stay away from guys who talk about being alpha or dom or emphasize their stamina. Guys who are fully versatile might have more empathy for a first time bottom. I don't know your personal health situation or views, but be sure you settle the BB/safe issue ahead of time and if you prefer safe bring your own supplies just in case. Also, be sure you know how to handle your own preparation. An accident in that department could really mess the experience up, pun intended.
I am not a bottom, so am limited in what I can tell you. I would 100% defer to advice from experienced bottoms here.
This guy has gotten over the top rave reviews but is expensive ($500/hr minimum 2 hrs): https://rentmen.eu/ivyleaguehungvst https://www.hilvp.com//
A bottom has recommended this guy highly as much better than a typical wham bam top: https://rentmen.eu/Nickhalden
This guy both has rave RM reviews and positive comments in this forum but you'll need to host or got to Jersey City: https://rentmen.eu/CooperStyles
This guy is currently visiting, is a genuine porn star, and seems very highly thought of by his past clients: https://rentmen.eu/TylerRoberts
This guy is visiting soon, is an actual porn star, gets over the top, rave reviews, but will be very hard to book: https://rentmen.eu/MikeGaite
Same: https://rentmen.eu/AJ_Irons