Do you use your headphones with another device? If yes, your headphones probably connects to yout M53 and the other device, but prioritizes media on your other device. I have a S22 Ultra and had this issue. I turned off the other Bluetooth devices to...
Try turning off the scene optimiser before taking a picture. This feature tends to soften the edges. Once you are done, open the picture and remaster it. It might help. I found good results, but not all the time.
