in poker luck is 10%, the rest will be how prepared you are to play, that's why to start playing poker and be a winning player you need three things, first study hard, be consistent and disciplined, the results will come by themselves, answering your question, in a tournament you will always see the luck factor to win it, but what you should focus on is to give your best game, to apply what you have studied and learned at the tables, that way you will get the results you want, and remember that in poker the results are always long term.