How to handle Firestore Query Results for later usage

I am currently struggling with my Firestore query results.
What I want to do is to query the database, fetch the results, write the result in an array --> this is already working with my code below!
But in addition to this I need that array later to compare it to a different array from a second query and this is where the issue is.

var arrayOfTuples = [(Int, String)]()
       
db.collection("Data").whereField("age", isGreaterThanOrEqualTo: 1).whereField("age", isLessThanOrEqualTo: 50).whereField("gender", isEqualTo: "F").getDocuments() { (querySnapshot, err) in
    if let err = err {
        print("Error getting documents: \(err)")
    } else {
             for (index, document) in querySnapshot!.documents.enumerated() {
             arrayOfTuples += [(index, document.documentID)]
             }       
    }
    print(arrayOfTuples)
} 
//Place where I need the array result

I can use the array result in the last print method, but I need it out of the last bracket that I can compare it to the second query result.
Have not found anything that I could return the result, but maybe it's completely simple (hope so).

Hope it's clear, otherwise just let me know.
Thanks!

You can't make an asynchronous call synchronous you need

func loadQuery(com:@escaping( [(Int, String)] -> ())){ 
    var arrayOfTuples = [(Int, String)]() 
	db.collection("Data").whereField("age", isGreaterThanOrEqualTo: 1).whereField("age", isLessThanOrEqualTo: 50).whereField("gender", isEqualTo: "F").getDocuments() { (querySnapshot, err) in
		if let err = err {
			print("Error getting documents: \(err)")
		} else {
				 for (index, document) in querySnapshot!.documents.enumerated() {
				 arrayOfTuples += [(index, document.documentID)]
				 }       
		}
		com(arrayOfTuples)
	} 
}

loadQuery { arr in 
  // compare here 
}