In the full tearful-YouTuber format, ring light, deep sigh, 'I want to address some things', the loser apologizes to their roster, their league, and the fans, then posts it publicly. Scripted by the league or improvised in genuine shame. The 'fans' are nine people who will never let them forget it.
Budget note: this one costs nothing but dignity, which makes it a strong pick for leagues that would rather spend the pot on the champion than on the loser's downfall.
Seen in the wild: 4for4.com · 1075thefan.com · trophysmack.com