Run any version of youtube on tv box.

Probably not. Not unless you can find some of upgrading the Android version it's running, that is supported by the current YT app. YT may still work in the device's web browser though?

 

Quite frankly I don't think you're going to be able to anything with that slow, and no longer unsupported box you've got. And you'll need to replace it with a new and supported one. It's not just the 1GB RAM, it's also very likely got a rather slow CPU in it.

FWIW I bought a new T95 Android 10 TV box a few months ago, and I'm very happy with it, YT looks great in full 1080p HD.

 

why not just update YT? or did you and now the new version does not work? i'm not sure i understand what's going on.

 

For that one, the description actually states Android 7.12, which may go out of support sooner or later. So does it come with Android 7.12 or Android 10? Other than what's in the (Italian) Ebay description, I don't know anything about that box.

The TV box I've got is the T95, 64GB version.
https://www.ebay.it/itm/T95-Smart-T...789444?hash=item2651a90844:g:zYMAAOSwjVtf1nfv
However the vendor is in China, which for me was no problem as I'm also in China.

And I can confirm it does have Android 10, and YouTube etc.
From my TV:

 

Unfortunately I can't do anything about shipping costs, EU import duty, sales tax, etc.