Yes, thanks Tom66, I'm looking right now, at book, Android for Dummies.
Have to play with that, a bit, as I don't know which permission to switch off, in the APPs sub-page.
I do want to continue casual use of YouTube, being a big fan of classic rock.
I think maybe what happened, to get my attention, was I perhaps accidently pressed or swiped a 'subscribe' or similar button. But I suspect, many APPs cheat,.....just a tiny little bit...such as using an enlarged button area (with smaller graphic ICON).
I'm going to spend a bit of time, exploring my Android book, on the various APP related features.
By the way, the current phone hardware is OLD, by modern standards (purchased in 2020). The CHROME features can be very messed up; for instance will 'flash' for a split second, to a video I had played days previous.
Also some text displays get garbaged, probably due to RAM heat related errors. Phone has been dropped, a couple times, which leads to cellphone microphone / jack failures. A good wack, on upper corner seems to clear the jack switch, from failure o.c. (as the speaker mute, when headphones are plugged in).
Awesome devices, though, with a decent pair of wireless headphones.
I enjoy Rock Musician biographies, and other 'creativity' issues.