Welcome to the forum!
It is imperative that you mount to the studs in the wall. No fastener will hold a TV to the thin panel board on the walls.
I have a TV on the bedroom wall in our TT. I didn't mount it, it was there when we bought it.
They utilized a stout piece of plywood, 3/4" I think, which is securely screwed to the wall studs in multiple places, bridging 2 studs. The TV mounting frame is very securely mounted to the plywood, using lots of screws.
The TV is a flat screen, doesnt weigh a huge amount, but has to be solid anyways to withstand all the bouncing going down the road.