Use APKPure App
Get Account and Sync Settings -One old version APK for Android
Just one tab and you will go to your sync settings
Features -
👉 Easy to use
👉 One click open settings
👉 Widget access
👉 Less than 2 MB
This application will help you to open a sync settings. You just need to install the application and open the application. Then you can reach there on sync settings.