Bad beats are a part of tournaments.
If you want to play tournaments, you have to understand that this game type is not only the most rewarding, but also the most frustrating and high variance game out there. You have to expect to lose and get ko'd out of a lot MTTs before your next big score.
Shaun Deeb is one of the best MTT players in the world, but at one point went on a 52 MTT downswing [IIRC] and only min cashed for $100 in those 52 games before his next big win. And these aren't $1-$2 games he's playing, they're the highest buy-in games PokerStars
had to offer at that time. So, even the best players aren't immune to bad beats and long stretches off losses.
Honestly, the only way to get used to it and get over the losing streak is to play more. The more volume you put it, the more you'll see results. Playing MTTs and making a profit from them is a long, hard grind but just 1 win can easily make up for a 20-30+ MTT downswing.