SWIFT

set image width and height swiftui

Image(room.thumbnailImage).resizable()
.frame(width: 32.0, height: 32.0)

increase the size of the image in Swiftui

struct ResizedImage: View {
    var body: some View {

            Image("myImage")
                .resizable()
                .scaledToFit()
                .frame(width: 200.0,height:200)

    }
}