For weird/horror games I follow alpha beta gamer on YouTube, so my suggestion is finding a YouTuber focused on indie games you like. As another user wrote you can browse itch.io featured page to find some hidden gems.
Proton mail has some extra (security?) feature, or they just lack smtp support, and you cannot directly use it on thunderbird. They offer a "bridge" app which allows you to do it, I just use that.
Unchained was born long before stremio, because the real debrid app for Android sucked so much it got pulled from the play store. It's not as media focused as stremio, so if you're only interested in finding and steaming movies/shows it's definitely less useful. It does have some nice features such as searching links on torrent websites, support for kodi servers and it's also being developed a support for torznab servers (such as jackett). It's free and open source without ads, so you can just try it
It's an extra layer of security. Your nextcloud instance won't be reachable from anybody who isn't on your vpn, if a bug which allows unauthorized access gets discovered you will be protected, if they steal your nextcloud credentials you will be protected, but if you're on a device without the vpn you won't be able to access nextcloud.
As for the domain you can buy a random xyz for a couple of bucks per year so just do it
As the others have said, a Google (search engine) replacement will have the most "privacy returns". Take a look at whoogle and searx, or if you can mak them switch to another search engine like duckduckgo
But I have no idea how good it is. If you want to use it offline I suppose you could get any eReader that supports loading stuff via USB, You can manage a kindle library with calibre and turn off wifi after the first setup, for example.
Couple of weeks ago I wanted to change the intensity of the light bulb. I open the hue app and it tells me to download the new app, not allowing me to do anything else. I install the new app and it asks me to register.... I still have my bulb at full light :D I'll either find a compatible open source app or a light bulb that respect my privacy, I got a couple of tplink ones which were cheap and seems to work ok
I'll never buy an Ubisoft game, I remember when years ago their games installed spyware on the browser (found it on my Firefox) . Pox on whoever thought that was a good idea
If I remember correctly it needs a (CO) TURN server, so maybe this is about an embedded solution?