Sus is used as a synonym of suspicious, or suspect, as in you've been acting pretty💸 sus, I think you're up to something.  It's a slang word used to say that someone or something shouldn't💸 be trusted.

"Sus"💸 is an abbreviation for "suspicious" or "suspect" on social media. It's often used when someone thinks that something is not💸 quite right or doesn't seem trustworthy.

According to Microsoft's official website, Black Ops 2 is indeed listed as a backwards compatible game for💶 both the Xbox One and Xbox Series X/S consoles. This information can be found on the official Xbox website or💶 by accessing the list of backwards compatible games through the console's user interface.

You'll need to keep the disc in the drive💶 to play. Games for the original Xbox also work on Xbox One, but compatibility is one way: you can't play💶 Xbox One games on Xbox 360 or the original Xbox.