@LordM
Hi please follow steps below to check. Thanks.
1. Update software to newest version.
2. Tap [Clear storage] on [Settings] > [Apps & notifications] > [Camera] > [Storage & cache].
3. If issue persists, please visit repair center for further ass...
@Hermanbatarat
Hi from your screenshot the issue is "front camera is missing", instead of "there is an icon for switching front/rear camera, but only rear camera is used for both mode", please visit repair center for further assistance. Thanks.