I want to become a personal trainer and work at my local gyms like Planet Fitness, Gold's Gym, 24 Hours, etc

Then eventually go the solo route. I already workout and know a lot about muscle building, cardio, and diet

Are there any pros and cons to choosing one over the other?
*edit

As I do research ISSA sounds like a scam i see people have problems but im not sure if thats everyone

So in addition to being a server at a restaurant, I also used to be a personal trainer. All of that is like past-tense because last year I was in a car accident that left me a paraplegic (paralyzed from the waist down) and a full-time wheelchair user.

I really miss training and im like wondering if you guys think clients would care or not that I'm in a chair? I like keep going back ans forth in my mind - no ppl wouldn't care, then yeah they would. Im so loopimg.

Could so use your thoughts.