Remove items already owned from library

1. How do I completely remove a game from my Steam library?
2. Why can't I remove games from Steam library?
3. Can you remove a game from Steam and buy it again?

How do I completely remove a game from my Steam library?

Click on “Help” and select “Steam Support” from the drop-down menu. Pick a game to delete using the search box at the bottom or from recently-played titles. Select “I want to permanently remove this game from my account.” Click on “OK, remove the listed games from my account permanently.”

Why can't I remove games from Steam library?

If you remove a game from your account first, you won't be able to uninstall it normally—you'll have to hunt down its files on your hard drive or SSD and remove them manually. To permanently delete a game from your library, click Help > Steam Support. Click the game you want to delete.

Can you remove a game from Steam and buy it again?

Steam lets you uninstall and reinstall any game you've paid for whenever you want.