There is so much luck in poker.

luck determines what you get dealt preflop

luck is whether you hit the flop and if so how hard

luck is the turn

luck is the river

luck isn't just whether or not you have the nuts, luck is if someone else has a strong hand so that you will get paid good

luck isn't just getting dealt AA in the BB, it's that the player in SB got KK and is repopping your reraise. luck is also your AA holding on after the river.