How do i restore my camera icon on an iPhione 8?

If you already tried (to no avail) all the steps provided in this support article:--> If the camera or flash on your iPhone, iPad, or iPod touch isn't working , please contact Apple Support directly, using this link:--> Contact Apple for support and service , or make an appointment (*) and have your device inspected at an Apple Store or AASP (Apple Authorized Service Provider) among this list:--> https://locate.apple.com/choose-country-region . After checking it out, they'll give you all the available options.

Regards

Giulio

(*) You can do it:

• Online:--> Genius Bar Reservation and Apple Support Options - Apple;
• Contacting a local Apple Store or AASP among the list provided above;
• Using the "Apple Store" app, available and downloadable from AppStore.

Try going to Settings ➜ Screen Time ➜ Content & Privacy Restrictions ➜ Allowed Apps, and make sure the Camera App is set to Allowed there.

If it is, go back to your Home Screen, and swipe all the way to the last home screen, then swipe again to access App Library and look for the Camera App there. You can then drag it back to a Home Screen if needed.

click here ➜ Organize the Home Screen and App Library on your iPhone - Apple Support