It's time to find new creators to follow—ideally folks who upload often enough that I probably won't forget they exist, and whose videos are long enough to enjoy.
A few of my top, still-active creators:
Crime Pays But Botany Doesn't
Casual, plant/fungal science
Comfy, film discussion, comedy
Some More News
Current Events, comedy
Lawful Masses with Leonard French
Less casual, legal discussion
15–45+min/every few days
While their topics aren't related (and don't limit yourself to them), they all upload relatively long-form content on a pretty regular basis. They all fill a niche comfortably, and uniquely—with their own personality. There's usually something to learn, and something to chew on, and something to laugh at.
And they're not all so big that we've all heard of them before (except, perhaps RLM)