Chess is a game of some luck. I think because there is no 'inside' random element such as a die or what cards you are dealt, it's misunderstood as a game where luck doesn't figure (those that play poker will note that while bad cards are not something that can be controlled and ultimately could undo the best player, a fair part of the game is how those cards are played - a bad hand on its own isn't a problem if you can convince your opponents to fold).
Because playing perfect chess is beyond the human mind, and for at least sub-super GM is often more complicated that our skill level allows us to work out, there is a luck element.
Take a sharp position that neither side really know what's going on - one of two things might happen:
My opponent makes an error and I see it - and v/v
My opponent makes an error and I don't see it - and v/v
If I'd calculated some other line (when both lines looked appealing and there wasn't time to calculate both) and this means I would have/would not have seen the error, then there is luck/bad luck that I chose that line to calculate.
Another luck example is the opponent plays an opening I've been studying or falls into my pre-game analysis so I get a good position.
I do subscribe to the make your own luck point of view, but that is about being successful over many events (critical moment where the right/wrong decision factors highly) not just the one. The chance of success in any one particular event could be down to you, but it's a game of numbers (the better you are, the better prepared you are, the better state of mind you are in, the more events you'll succeed in overall and the better you'll play).