Battery Performance

To battery life
1. Change the performance from standard to light under settings
2. Use modes and routines to set some automatic routines when phone is being idle
3. change the screen profile from vivid to natural
4. Turn on Dark mode (you can add routine to schedule the setup as per your usage)
5. turn off AOD and use dark wallpapers
6. turn off nearby device scanning
7. turn off switch to better network under connections so that phone sticks to the current network and stop looking for better wifi networks nearby

For Camera
1. download the camera assistant app from good lock
2. turn off screen optimization
3. switch the picture softening to medium
4. switch the optimization to medium or off if you like the straight out of camera images
5. use pro or expert raw for better results than auto modes
there are more that can't be shared over text box's to understand better search for best camera setting for S23 on youtube you will find a similar video from what whatgear channel i find that informative in understanding about the modes and usage

For Video :
Samsung has its own integrated video player within gallery or you can look for the video file under my files and click on it select it will to choose a player select video player it will run smoothly.

hope this helps

Thanks