Most content creators don't make money from ads. Google keeps on changing the rules to be able to monitize or keep monitizing their own videos. Google has put ads on videos when the creator did not reach the requirements to make money on ads.
This is why creators have sponsorahips, affliate links, their own merch, Patreon, or OnlyFans. They also use Youtube more as an ad platform for their other social media accounts like Instagram and Tiktok. Depending on the content some creators get paid more on Tiktok.