How to choose MTB bike tyre: hookless, tubular or clincher? I don't know the difference between hookless tire, tubular tire and clincher tire. When I choose the tire type how to make a professional choice? I want to know which tire type is best for me.
You should use the tyres that fit the rims on your bike. If you were a professional you'd use whatever your sponsor told you to, so that's a bit of a side issue.

Tubulars are back in the MTB world, but they're still rare and it's unlikely your bike has them. I suggest not buying a tubular wheelset, let your sponsors do that when they decide it's a good idea.

Hookless rims have some advantages but not to the point where I would throw away hooked rims to buy them. That assumes you're running tubeless, the advantages of a hookless composite rim with tubed tyres are pretty imaginary.