When gambling, if you lose, you can keep on playing until you lose all the money in your pocket or start to win.
In tournaments, you lose twice and your out, can’t continue to play.
If it’s a small local tournament than maybe the pressure of gambling is higher, depends on the effect on your life if you lose.
If you travel to the other side of the world risking a lot of money covering expenses and you lose twice and go home, that’s a total different pressure that no gambling can match. Unless you are an amateur with no expectations and just travel for the fun of it.
If you gamble more than you can afford to lose, than this is something completely different, then you’re an idiot and I don’t know if idiots feel pressure
