In the past ive used front end apps like NewPipe and PipePipe as front end applications for youtube.
Its useful in that it lets your get past the Ads, Algorithmic Suggested Videos, etc… You can just get straight to the videos and/or channels you want to watch and browse. No fuzz, no frills.
I looked and searched in the f-droid app for search engine related front end applications. So far no luck. I know some apps are not so easy to find, or you have to type the correct key words for it to appear on the search list. Anyone know or can recommend any search engine related front end applications ? for things like google search and/ bing search, for example.