You use your hard work earning for it. And you underperform in your games, people know that. They will report you and eventually you will be back to your real rank.
Why you do that? C’mon I know you guys are lurking here. Tell me the answer I’m just curious.
Sometimes playing like heralds help. When they give up, you act like you gave up as well but dont feed. Farm afk if you carry, buy midas only fight if they are hitting tier 3 tower (and pray). If you are support buy midas and follow your carry and ward/deward. Dont think about farm/xp (and also pray). It wins me games(half of the hopeless game at the least). Works in 2k~3k mmr bracket. (Dont about higher ranks)