ok understand, so basically if someone put my game to his collection is basically because he is interested, right?
Viewing post in What are collections?
In 99% of the cases, yes. Just be happy and proud if your game is put into collections.
However you can use collections for anything, and I have seen people use it for instance to keep track of malware: https://itch.io/t/3512426/itch-is-not-a-safe-place-do-not-download-things
They do. But they need you to help. (insert that picture of that bear that want's you to help prevent wildfires).
If you come across suspicious projects, hit that report button on the bottom. And tell them why it is suspicous, like provide a link to the original in case of a stolen game.
What they desparetly need to improve is their hacked account detection. 2fa will not protect against cookie theft. And there do be technical stuff to detect hacked accounts, even if the tokens are valid.
Think of it as a bookmark. People use them to manage their favorites or as a watchlist, or as a reminder that they already have visited that project. Or any other thing you can do with bookmarks.
Best case is, that you find yourself on a public collection with a descriptive name. Then you know the intention.