If they're individual doujin torrents (not megapacks), you can find a considerable amount of them on Exhentai, then you can just download them, and force recheck your torrents to make them alive again.
BlueRingedOctopus
PTP HDB BTN AB
paste the link in Doubledouble dot top
Proton is way better for our use cases since it offers Port forwarding which Mullvad stopped supporting.
Mullvad has good marketing that's why people think it's more secure, in reality, both are almost the same in terms of privacy and security for your average joe.
E-hentai (Biggest Library)
Nhentai (E-hentai backup)
Hitomi (has a lot of original uploads that E-hentai doesn't have)
3hentai (Fastest in terms of loading, at least for me)
I only read doujins so these 4 are enough for me, most other doujin sites just rip straight from E-hentai so they're not worth adding
Wait for an indie game you like to go on sale, then buy it. Once you have the base game, you can add DLCs unofficially and steam will add recognize them.
mp4 for compatibility, literally click and play on 99% of devices, most OSes come preloaded with software to play mp4 files.
mkv for functionality, it's a much better format in general but as you mentioned, they're not tech savvy and it is possible that they may not gave VLC or any other 3rd party video player so they may face issues, I think it'd wiser to give them mp4 files.
And for encoding, you can either encode in H.265 or AV1, both are amazing, they'll help you save almost half of your storage, since they're way better than H.264, the quality will be indistinguishable but the files sizes will be halved.
"Will Microsoft report me to the police for pirating games on my computer that runs windows? 😰"
Any reason to download from a low bitrate streaming site (hianime) when you can download good quality high-bitrate files from other DDL sites or torrents?
It gives you literal FLAC files, how are they gonna be malicious!?
People need to stop over analyzing things, its just a qobuz ripper, people who want to help the community provide them with Qobuz tokens that don't expire as often as Deezer, now they just rip from Qobuz on your request, as simple as that. Firehawk is also building a similar site from scratch.
Considering the Price per TB is 10-11 US dollars, it's gonna cost $3500 max