Are REST and passing multiple ids (WHERE IN queries) compatible?

Question

SQL

I will describe a simple situation:
api/users - all users
api/users/5 - the fifth user
api/users/1,2,7,11,99 - select query by type where_in('user_id', $ids)
In the latter case, to to receive several users, it is enough for me to make only one request.
I would like to know if this approach has the right to life. Do I need to make 1 request or 5.

Answer 1

GET /api/users/ - all dudes
GET /api/users/?filter[id]=1,2,7,11,99 - filter for selecting all dudes
GET /api/users/5 - dude with ID 5
jsonapi .org

Answer 2

In fact, this is just data filtering, which is solved by query parameters:
/api/users?ids=1&ids=2&ids=7&…