So, it is highly unlikely they will pay you enough (50k minimum salary), have enough registered capital, enough registered thai employees (paying social security, etc.) at a local Muay Thai gym. It is too much of a headache for them. If they don’t care it won’t get done.
This is probably the only realistic option if you wanted to do it, which you probably won’t. You need to start your own company with 4 minimum salary thai employees. Then pay yourself through that company. That company could then contract to manage the remote bookings through a contract or whatever other work. This will require a significant amount of work, time, and up front costs but could lead to permanent residence.