For proper desktop Linux in that price range a used surface is a choice. It'll be bigger and less battery life than an android tablet and I don't know what the fan situation is in the generations in that price range now.
Another option is go with an Android tablet that has LineageOS support. You get fullish access to the system, but the system is still Android, so depends on what you want if that works for you.
The first one would have deleted nothing as it needs to match the whole name. I recommend running find with an explicit -print before replacing it in place with -delete or -exec. It's good to remember that find has a complex order dependent language with -or and -and, but not maybe the best idea to try to use those features.
All instruction sets are documented in English and it's more esoteric so the tutorial scene in any non-English language is less developed, so that requires even more English skill than memorizing a couple of keywords in a mainstream language.
Make sure you don't encode as MP3, as it doesn't support seamless playback in a standard way. There's a forced gap due to the compression. Use for example wav or ogg.
They know which IP address belongs to which customer at the time and anybody can download a torrent of some copyrighted content and see which IP addresses are down or uploading it at any given moment. No need to inspect RAM, no need for DO to monitor traffic. They (the copyright holders) will send a cease and desist through DO already, and could change to send a lawsuit instead.
This is a long time ago and the battery on the cart is probably dead so can't check. I remember thinking how it's over 10 days, so maybe 250 hours, game is Pokemon Silver.
Ubuntu 5.10 back when a random Finnish teenager could ask Canonical for free install CDs and they'd just mail them to you no money asked.