What some people call "luck in chess" is simply uncertainty, but that doesn't equal luck. Even I might use the word luck when speaking casually, but if you want to be serious about it, there is no luck in chess. If i toss a coin to decide between 2 moves, i introduce an element of randomness to how i play the game, but i still can't say that there's luck in chess - the luck/randomness part resides in how people are playing the game, and that's something different imo - i make a distinction between the two (i'm not chess, i'm a chess-player). Just because someone can get "lucky" in a game of chess, it doesn't mean that luck is part of the game - and on the contrary, in other games where luck is an integral part, players who play those games can still use their skills to minimise the luck-part, but that doesn't change the fact that in those games luck is part of the game.
Hope that makes sense...
There is definitely less "luck" in chess than backgammon but it is that increased probability in practical play that draws many chess players to games like backgammon.
I will never be great at either game and at 62 years of age have decided that tournament chess is no longer for me. I have gone as high as I ever will in terms of rating so I now play chess only socially and am starting to play a lot more backgammon. It is easier to excel in backgammon because memory isn't quite as important.