Yesterday, I was trying to delete bunch of crap from my windows 10 setup, because windows is just chewing through HD space like nothing. Gigs of space are eaten

Yesterday, I was trying to delete bunch of crap from my windows 10 setup, because windows is just chewing through HD space like nothing. Gigs of space are eaten by temp files, caches, backups....in most circumstances you can't even delete them. Windows is taking ~6GB and I don't even use them, apart from calculator.