This may not be the appropriate area but it is Murena One. I have been using the camera program which came with the Murena One and would like to try another. There may be some or many who did the leg work trying different camera programs downloaded from the APP Lounge and which programs are more beneficial to the user of the Murena One camera.
We had here several threads about this.
You must keep in mind that the /e/ stock camera app is a fork of OpenCamera. When you search for camera apps you will find OpenCamera itself and also other forks.
Another app is FreeDCam. Not bad for my taste, I use it a lot.
I’m not sure if one of the GCam ports will run on the Murena One.