I miss the days when you could watch a youtube video and get suggestions related to that particular video. It led to discovering new things. Now they just show me more of the stuff I've already seen, or things they want to promote.
There's the video results in the various search engines, like DDG, Bing, and Yahoo.
Goog won`t allow it.
Ironically, Google’s federated tracking system (FLoC/Topics api), if probe-able, could probably be used to get you some competing suggestions for YouTube videos