I can't use mobile data on my Apple Watch SE (2nd Gen)

On your phone: Press Watch.

On your phone: Press My Watch.

On your phone: Press Mobile Data.

On your phone: Press Set Up Mobile Service and follow the instructions on the screen to set up mobile data.

Press and hold the Digital Crown.

Simultaneously, press and hold the Side button until your Apple Watch is restarted.

Slide your finger upwards starting from the bottom of the screen.

Press the flight mode icon to turn the function on or off.

Press the Digital Crown to return to the home screen.