Followed the exact steps here Swift - saving a file to icloud drive

Code

func save() {
        do {
            if let containerUrl = FileManager.default.url(forUbiquityContainerIdentifier: nil)?.appendingPathComponent("Documents") {
                if !FileManager.default.fileExists(atPath: containerUrl.path, isDirectory: nil) {
                    do {
                        try FileManager.default.createDirectory(at: containerUrl, withIntermediateDirectories: true, attributes: nil)
                    } catch {
                        print(error.localizedDescription)
                    }
                }                   
                let fileURL = containerUrl.appendingPathComponent("test2.txt")
                
                if FileManager.default.fileExists(atPath: fileURL.path, isDirectory: nil) {
                    try FileManager.default.removeItem(at: fileURL)
                }
                try data.write(to: fileURL)

                print("Drawing saved to \(fileURL)")
            }
        } catch {
            print("Error saving drawing: \(error)")
        }
    }

my info.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>UISupportsDocumentBrowser</key>
    <true/>
    <key>NSUbiquitousContainers</key>
    <dict>
        <key>iCloud.com.mycompany.TestSketchSave</key>
        <dict>
            <key>NSUbiquitousContainerIsDocumentScopePublic</key>
            <true/>
            <key>NSUbiquitousContainerName</key>
            <string>TestSketchSave</string>
            <key>NSUbiquitousContainerSupportedFolderLevels</key>
            <string>Any</string>
        </dict>
    </dict>
</dict>
</plist>

iCloud container id is

iCloud.com.mycompany.TestSketchSave

App id is

com.mycompany.TestSketchSave

Files successfully shows up in icloud drive settings

According to the post's answer I have also upgraded the version number of the app.

Still does not show in the File app