I hate to say it brother, but this is a natural occurrence when a video doesn’t catch on and rise, some just aren’t catching and some do. It’s an audience issue not YouTube 
Trends are everything tho, you’re retaining a core audience if you don’t branch and touch corners (like previously me and factions touching my home audience compared to a trendy bedwars video that’ll reach outside) just like when you hit bangers with Ben10... that was a hit 