Web and browser technology gets into your machine so deep they (youtube) knows you run an ad blocker. Brave has ad blocker built-in, and a damn good one.
This is becoming a battle, increasing with every day. Youtube does track the viewers they lose and work algorithms to allow a measured denial of service to those they wish to block. It will only get worse.
In the end even Rumble will employ the same logic as these sites need ad revenue.
On other devices without blocking we see INAPPROPRIATE ADS being fed to children that are watching kiddie videos.
YouTube does play tricks
I went a whole.month with draggy videos. Sometimes I get ads sometimes I don’t .I do use an ad blocker .
Fwiw, I do not have a YouTube account so I am not logging in to YouTube , not sure if that makes a difference.