If you play poker, especially MTTs, there will always be upswings and downswings, that's just how it works, no matter how good you are. Sometimes you'll play 100's of
hands with J5o and T3s. Sometimes you'll lose with your pocket AA,KK,QQ many times in a row.
One tournament is a luck, 1000 tournaments is a skill and little but of luck, 10000 tournaments... you get it.
Bankroll management and not playing when you're tilted is a key. It's kind of like riding a bike uphill, just keep going and you'll reach the top sooner or later.