Here's a couple of YouTube tips.
With most browsers, if you add a full stop after "YouTube.com" in the URL, adverts disappear.
Try it. It saves a lot of annoyance.
Here's another: remove "ube" from "YouTube" in the URL and you will be offered a download of the video you are watching.
For better quality you need to pay, but for most purposes the lower quality may well be ok.
Caveat: I haven't worked out how to do either on a phone using the app.
This is priceless info. How long have you known this stuff?
Jules