Search & Download on Android – NewPipe (FOSS)
Bypass Google, and block ads & trackers. NewPipe is the most free and private way of watching YouTube Videos! Download videos and MP3s too. NewPipe has been created with the purpose of getting the original YouTube experience on your smartphone without annoying ads and questionable permissions.
Download from F-Droid:
https://f-droid.org/packages/org.schabi.newpipe
Or go to their website:
https://newpipe.net/
Search on Linux & Windows & MacOS – FreeTube (FOSS)
The Private YouTube Client
“FreeTube is a YouTube client for Windows (10 and later), Mac (macOS 10.15 and later), and Linux built around using YouTube more privately. You can enjoy your favorite content and creators without your habits being tracked. All of your user data is stored locally and never sent or published to the internet. FreeTube grabs data by scraping the information it needs (with either local methods or by optionally utilizing the Invidious API). With many features similar to YouTube, FreeTube has become one of the best methods to watch YouTube privately on desktop.”
Download on Linux – YtDownloader (FOSS)
On Linux Mint, go to Start Menu > Software Manager > ssearch for YtDownloader (Flathub). Install.
(Otherwise here: https://github.com/Tyrrrz/YoutubeDownloader)