Avoid binge-watching and mindless scrolling!
Youtube employs various algorithms/techniques to serve up content (such as through its Feed) to keep you scrolling, tapping, clicking, watching and consuming.

Avoid addictive tendencies encouraged by such platforms by consciously choosing the content you want, where you source it from, when you want it, and for how long. Consider if things benefit you. Keep your own list of channels to watch rather than relying on a Feed.

Download videos and watch them offline, perhaps on a dedicated device, and at a time that best suits you. Avoid consuming while you're consuming (eating).

Y2Mate
This service allows you to download Youtube videos as MP4 video or MP3 audio files. (After 'converting' the video, right-click the Download button and choose 'Save Link As...')

PasteDownload.com
This service allows you to download Rumble videos. (After 'converting' the video, right-click the Download button and choose 'Save Link As...') While this lacks an audio-only option like Y2Mate you can use either VLC Media Player to convert the file to MP3, or Audacity - I prefer the latter because it is more straightforward and results in smaller file sizes (64 kbps is fine for podcasts). Sometimes the service downloads the wrong video which may be due to Rumble's auto play option.

Unhook
Youtube (like other) wants to keep you on the platform for as long as possible. This browser add-on enables you to remove the Feed and more, helping you to only watch videos you've actively searched for.

ReturnYoutubeDislike
This is an Add-on for various browsers that brings back the Dislike counter on the Youtube page. This is important in order to help you judge if a video is going to be worth watching.

Video Length
Consider actively seeking educational and informative content of a reasonable length (you can always digest this in smaller portions). Keep a notepad/Notepad to hand and build on what interests you.

Playback Speed
Value your time. Consider playing videos at an increased speed based on the speaking speed of the person in the video, how detailed/complicated the information in, and your level of attention/focus. This is generally achieved via the gear icon.

Quality Setting
Lower the quality of video playback from the gear icon on Youtube or Rumble videos to minimise your impact on internet connection. While this setting is remembered on Youtube it has to be set each time on Rumble.

Free Speech and Anti-Censorship
If you value these things, consider seeking out creators who upload their videos to Rumble or BitChute, rather than Youtube.