Why can't I switch to the previous or next song using gesture controls?

Please make sure you are pressing the correct control area on the earbuds. If still unable to trigger the function, try switching to a different music app to see if the function works properly. When the gesture function is triggered, it sends commands through to the app for processing. But because some apps don't support switching commands, they will not respond to the earbuds' control commands, leading to ineffective gesture control.
This issue could potentially affect TWS Bluetooth earphones, but it doesn't indicate a problem with the earbuds themselves.