SwiftData filter many to many relationship

my question is how to filter in search text for city.name in Concert ? i tried to reach city name using nested compact map but couldn't handle it.

  class Concert {
    var kindOf : String
    var city : [City]
}
 class City {
   var  name : String
   @Relationship(inverse: \Concert.city) var concert : [Concert] 
}
  @Query var concerts : [Concert]
  @State var searchQuery : String = ""
    
var filteredConcert : [Concert] {
        
if searchQuery.isEmpty {
            return concerts
        }
       
 let filteredConcerts = concerts.compactMap { concert in
          
    let kindOfContainsSearch = concert.kindOf.range(of: searchQuery) != nil
         
            return (kindOfContainsSearch ) ? concert : nil
        }
        return filteredConcerts
    }