mineapple

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

I can also recommend Libretube or Clipious for Android

What speaks against torrents with mullvad?

Some OSes allow per app firewall, so the easiest way would be to disable network connection for that app in the android settings.

The google services are preinstalled they'll send data nonetheless

I recommend you to root your phone. With a rooted device you can debloat your phone very easily with UAD (universal Android debloater) for example. Delete any Google related app and of course any diagnostic app from OnePlus. After you deleted Googles apps including gms (!) You can install microG via an magisk module named microG installer for magisk. You don't need the Playstore, use Aurora instead. But first search on Fdroid if there is an opensource alternative for what you're looking for.

All of this might take an evening, but after it, you have peace of mind. Note that for root, you'll have to unlock the bootloader. This will wipe your data, so do a backup beforehand.

If you want to, I can give you a more detailed guide.

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 ^^

Problem with that is, idcac accepts the cookies, ublock blocks the banner and thus you havent given consent and no cookies should be placed. Note that some websites might collect data regardless but there's nothing much to do about it. ¯_ (ツ) _/¯

6 adblockers?! Have you looked into uBlock origins customisable block lists? You can combine at least 3 blockers with that. Additionally you could add custom block lists.

Edit: clarifications and spelling errors.

In Android 13, there are two different battery optimization steps, are you sure, signal is unoptimzied? I have had no issues at all. Even now without Google GMS, I receive them within 20 seconds. Edit: You can also bulk delete pictures fairly easy within Signal in the settings. Imho its the videos though, that take away the most memory.