problem

[Adityonaldo]

When I tried to open camera it showed this👆👆. What to do please help.

[ZombieHRN]

other app is using camera at the same time
can't comment on it till i check ur phone in real life
find out which app is also open and using camera at the same time🤔
find it
close it or remove the camera permission for the app from device settings👍

[AyushRajput]

reset camera setting and turn off camera permission of other apps.

[akki057]

remove all background running app, automatically it will disable the app that use camera

[Adityonaldo]

Got the solution:RESTATING THE DEVICE