What does happen when you tap on the camera icon @maeren
Nothing or does it open and close again etc ?
Try a soft reboot by turning the phone Off and On.
Make sure your phone's software is up to date please.
And check your apps are updated in your Samsung Galaxy Store and Playstore.
I appreciate you've tried clearing your camera cache but also please try this....
As a last resort back up and consider a factory reset and a Samsung Service Centre can help.
I wish you all the best. @maeren
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.