I’ve had good luck by using https://peertube-search.com/ but beware, use an ad blocker because it’s pretty loaded with spammy ads. However, if you do that you can actually filter by language, category, upload date etc. Everything that should actually be available in the official search https://joinpeertube.org/browse-content
Another great insight into a fediverse project:).
I haven’t played with bonfire in a while, it looks like things are shaping up nicely.