CEO/board/executives initiate "we want to lay off X people", they send it down the ladder through management. One manager says to another "hey, you have to pick at least 2 people you want to lay off" for example.

I don't know how important/critical you are in the grand scheme of things if your manager selected to choose you instead of somebody else on the team.

That's all if your manager doesn't also get scrapped/if a manager above your manager didn't choose your entire team to get scrapped, etc.