Excluding data from firestore search - firebase

Question

I'm working on a dating app. Right now we don't want to show the data of users that users have already seen.
For example, let's suppose if A has seen B and C.
now we want to show more users to A. Then B and C should be excluded from that list.
What I'm doing is getting data from firebase like [B, C, D, E, F] as B, C is already seen. So removing those we have [D, E, F].
What's the issue:
Actually getting the same data, again and again, makes more reading numbers. It also slows down the getting of data process. Like if we get a list from firebase and all the profiles in that list are already seen then the device again sends a request to firebase and gets more profiles. it does the same for the new list and if these are also seen so it makes another request again. This takes time and users have to wait until there are profiles to swipe.
Can we make something like that? We just save a list of all the seen profiles at any point and make a rule to exclude those profiles from the search result.
We don't need those profiles at one point but we need to access those profiles to show user he has seen these profiles.
Any help will be appreciated.
I got a little similar case but I didn’t understand
{
"rules": {
"Children": {
"$child_id": {
".read": "auth != null &&
root.child('Family').child(
root.child('User').child(
data.child('parentId').val()
).val()
).child('members').child(auth.uid).exists()
}
}
}
}
Update:
there are different node:
database
|
`- users
| |
| `- userId
| | |
| | `-name
| | `-id
| | `-address
| | `-..... more details
| `- userId
| | |
| | `-name
| | `-id
| | `-address
| | `-..... more details
| |
| `- more users . .
|
`- swipes
| |
| `- uniqueId
| | |
| | `- whoSwiped: id
| | `- whoIsSwiped: id
| | `- swipedType: like/dislike
| | `- createdAt: date
| `- uniqueId
| |
| `- whoSwiped: id
| `- whoIsSwiped: id
| `- swipedType: like/dislike
| `- createdAt: date
first swiped id is fetched then user from "users" node is fetched ids that are already swiped are removed from the users' list.