How can I create filtered metrics?

I'm trying to create several metrics filtered by specific items in a dimension.
For instance, unique numbers of users "user_id" with the status "closed" in status column.

I reached the help page of Custom Expressions.
However, I could not find the answer to do what I'm trying to do.

I'd appreciate if you could tell me how to do it.

Hi @Taka
If you are talking about Metrics in Admin > Data Model, then those do currently not allow expressions: - upvote by clicking :+1: on the first post
It is possible to get some base calculations by using Models: