I can also recommend Libretube or Clipious for Android
Vor the site you have visited and has some hidden SEO spam related to its topic.
Some OSes allow per app firewall, so the easiest way would be to disable network connection for that app in the android settings.
I also enjoy that one, but I found out, that the file transfer doesn't work on my university network.
The google services are preinstalled they'll send data nonetheless
With root, it is not hard at all. You just net the "fix safetynet check" module for magisk. After that you'll need to hide root within magisk: Hide magisk + Zygisk + enforce denylist. Some of the Apps might still detect the Magisk App somehow but for that, I recommend you "Hail" from Fdroid. It freezes / deactivates the apps you want and thaws them, whenever needed. In the frozen state, magisk won't be detected, as it seems uninstalled to other apps. Hail is also incredibly nice for apps that drain your battery on idle. It is even possible to use GPay without any problems, though it is a bit tricky to set up for it to work. But there's tutorials for that as well.
UBlock Origin is the name of the extension. My autocorrect messed it up ^^
Once, I searched for a very specific thing about my laptops power throtteling behaviour and found an reddit post with an answer to it. After reading it, I saw my own username next to it :D I seemingly dug down that rabbit hole a couple of months prior.
We have very beat up VW T5s at my company and sometimes I do exactly this to practice. I have no empathy left for these, I don't feel bad for the gearbox. It surely will be the last thing to fail on these cars.
If that is your mindset, you're definitely better without root. My phone is rooted for three years now and never had any issue. I never had an app fail with my methods to hide Magisk. I even got GPay and contactless payment working when I still had Google services installed. Without them, it is impossible unfortunately.
I know I'll miss the alert slider from my current OnePlus phone, when I have to replace it in the future. On the other hand, I miss the fingerprint reader in the power button. Its just more reliable.
We had a TV report about a photographer who actually transfered big files with via horse because the transfer over the internet was slower than a calm ride. (Germany - 2021) link for Germans