Great Blue

Could you post the output of ufw status verbose ?

A bit late, but keep in mind, TMDB is not FOSS and is owned and run by a private company.

I can see a bot doing it, behaving like the Piped-Bot with an explanation why it’s important to remove the tracking.

Fennec (Firefox for Android) with uBlock and NoScript

You could also look into OpenWrt and maybe get your device an open firmware. For a more advanced setup you can look into OPNsense, but you will probably need additional devices for WLAN, DECT, etc.

It should be the same. But depending on the organization behind the platform, they might play dumb if you only request the deletion through the profile tools.

For Android have a look at NewPipe. You can add PeerTube instances and watch there. But AFAIK it was removed from the Play Store because it lets you watch YouTube Videos without Ads.