Retrieve specific data from specific document from Firestore without using a List in SwiftUI

I connected my SwiftUI app to Firebase Auth and Firestore, and the data is stored in a collection.

My question is, how can I read specific data from the signed In user and display his data without a List?

An example, the navigation title will be like this:

Text("Hello \(The signed In user's name)") and so on.

Any helpful sites or videos?

Retrieve specific data from specific document from Firestore without using a List in SwiftUI
 
 
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