I do not consider sumo as a sport, but a totally bland and goalless fight and I think even the fighters should take more care of their health and lose weight.
Poker is a game of chance. You cannot control how the cards are dealt and at times, this will determine the winner. An experienced player may lose to a novice because of chance and the optimal play will create a complete loss.
Game of skill and chance , definetely not a sport , not physical activities involved and not very healthy . It's more game of skill , skill prevails on the long run over chance , although beats and downswings do exist .
You need a little bit of luck because you play with random cards, but without skills you`ll lose in 90% of cases.
I dont think that is a game of chance
Poker for me - the passion of a lifetime, brainwashing, at any time, relieve fatigue (depression), but it's not a sport, a hobby is likely, even at the professional level. Here there is good luck and it is not chess