If you aren't strictly concerned with having it losless you can check out yt-dlp and download straight from youtube.
montar
yep! I've found out browsing hacking/spamming site and i've found something too good to be true, it downloaded archive nested inside other archive and in it was silngle .lnk file leading to "the resource". Peeking inside i've found powershell executing base64 (or base32?) encoded script (it's got commandline option for that. if you want to ask wtf ask microsoft, and tell me), it dl'd some exe from some site and ran it, site was down alredy.
Mastodon i guess.
Just putting all your stuff in one big .7z so you can unpack it to directory then scan them all w/ AV.
He didn't, malware guys use UPX and it's true that antiviruses scream bloody murder when they see it. It's also true you can't see what's inside unless you have special tools to do so. UPX also has one huge downside, it's its RAM usage, due to it's inner workings it's unable to use optimisations that normal binaries can like page sharing.
They will not because it wouldn't be profitable to them.
If you log in w/ tor to account you've logged it w/o it you deanonymise yourself and it makes no sense.
Tidal and tidal-dl. You can ask me for stuff.
Why didn't anyone mention burning it to ashes?
Depends on country you happen to be in. If it's Poland or eastern Europe noone will give a damn. If it's Germany then you might be screwed. If you're on a good VPN you should be ok even in Germany.
Aside from reverse image search Yandex is wonderful for obscure things like software reverse engineering.