Jiu Jitsu! As you get better at it, you'll learn how to do certain things by feel, because if you use your eyes your "posture" will worsen -- giving your opponent an advantage
As a MMA trainee myself, I fully agree. Love the sport (still thinking about ways to avoid injuries long term, tho). However, sadly, since the pandemic I don't feel comfortable going to trainings. I live in a country where there are no measures (at least none respected) so the risk of getting something in such an environment is high. Will go back when things settle down a bit tho :D