I want to go see a personal trainer but I'm too nervous to go?

I called a gym and asked if they have personal trainers and they said they do. I know a lot of trainers are men (honestly I would prefer a man tbh). I mean what if he sees me and up and quits his job or refuses to work with me? What if I accidentally like break the machine or fart in his face or something? I thought about just working out alone but I think it would be better to work with a trainer at first instead.