Music player, fork of the now defunct Clementine. Lots of options to play around.
yeolsongarak
Me and lots of people have been torrenting from home for years and years, some of my accounts are older than a decade, and all this time without a single problem. You shouldn't be afraid of it like that, we're not in the era when ThePirateBay was being sued and many people were getting DMCA'd.
If you're gonna pay, better get a seedbox.
You either use TOR (only way to browse without an unique fingerprint) or have a hardened Firefox without using most sites that could potentially track you.
Browserleaks is not extensive but it gives you a good idea of how to reduce that fingerprint https://browserleaks.com . Another option is to use https://github.com/arkenfox/user.js but be sure to read their wiki
Redditors.
There's a 4chan-like site that has this "live" feature, it's really fun and honestly doesn't get old. There were people really bad at typing, but it wasn't such a big deal, and even better if you're chatting with friends.
From public trackers, should be as easy as creating a new torrent with some popular trackers out there. The file you have is the same as others so they should be able to find you via p2p, I think? Or if you have qBittorrent, it has a torrent search function, maybe the original torrent is in there.
It's very hard to get invites (never had any), but it's very easy to do the test!
Best way as in better organized and most complete, https://redacted.ch/ or https://orpheus.network/
I like to use this website when I want an alternative to what I'm using: https://alternativeto.net/software/github/
I think it's absurd putting free software against tech giants in the same field. One is for profit and can pay to innovate, the other consist of volunteers doing it (mostly) for free. It's not like FOSS applications don't want to innovate, it's just that they can't for the most part.
It's equally absurd to demand things like "you should do research and development", like who are you talking to in particular? The FOSS community is not an organization.
Having a separate partition is a good idea and funny enough it can help you in this issue. If you try to reinstall the system, you can format the other partitions and leave /home untouched, so you will have a fresh system but keeping all your personal data as it is; that's the main benefit of having multiple partitions.
Next time, you should just make /var bigger according to your own experience. Other people only have 2 partitions: / as a 20-40 GB one (or bigger, this is according your needs) and the rest of your HDD/SDD for /home. Another tip is that when you're re-installing the system, use a new nickname, otherwise the new system will try to use all the old config files in your old account, and finally, if there's very important stuff in /home, definitely make an outside backup, there's always the chance of misreading something or ticking the wrong box.
I have used all of those as daily drivers for a few months, they're all great. But distros like Ubuntu or Elementary feel a bit constrained, and good old Debian gives you enough tinkering room.