I would be suspicious of an American TKD instructor who opens his own dojo with only a 2nd Dan black belt. That's way too little time to call yourself worthy of teaching others on your own. American TKD has a bit of a rep for assembly line belting... and what you mentioned about tournament emphasis is another stereotypical problem with many suburban TKD schools.
My first run-in was with a local TKD instructor when I was in high school. He was actually a skilled martial artist, but his school was a bit like the "Cobra Kai" from Karate Kid, and cranked out more than it's share of bullies and hotheads. He emphasized tournament fighting, so his students were aggressive, annoying, and fortunately predictable. There was nothing ever discussed about ethics or self-control. After a year of trying to bully my mean little Sicilian buddy, one of the local TKD idiots went for a high spin-kick against him. TKD Idiot got power-punched in the nuts, and that was the last time anyone bothered the Sicilian kid.
My second experience with the 2nd Dan Master of Death was in 1989. I went down to a new dojo that had opened up in town, and asked if I could sit in, so I could see if I wanted to study there. I'd had a few years of non TKD martial arts, but told him I'd had very little, so that I wouldn't be shoved into anything I didn't want to do... just wanted to see what the normal daily routine was. Well, after twenty minutes of doing one-step and two step drills with another student, we started doing these real short sparring things where we fight for a minute, then rotate. To make a long story short, I wound up in front of Sensei, he kicked me in the face and cut my lip open. It was a good inside crescent kick, I suppose, but I would expect the instructor to have sense enough not to bloody up someone off the street. He had poor control, and then followed it up by laughing at me. His students seemed horrified.
Others I have talked to find a disproportionate number of hotdog TKD instructors with low belts rushing out to open their own suburban dojos, moreso than other martial arts styles. TKD itself is a very effective martial art, but I have real issues with the teaching practices here in the US. It sounds like you might do better elsewhere.