Front camera is not working on apps

On what iPhone model?

Are you using a screen protector or cover that can obstruct (interfere with) your fromt camera? try to remove it.

Have you already tried a "forced" restart of your iPhone using these instructions? Force restart iPhone – Apple Support

Regards

Giulio

If the "forced" restart didn't work, contact Apple Support using this link:--> Get Support

Regards

Giulio

My camera stopped working after I updated my phone to iOS 14

mine after i updated to 13.7 and now still doesnt work...