This Android System SafetyCore by Google installed on you phone without your permission its is used to monitor photos on Gallery I recommend everyone to uninstall it.Link :-https://play.google.com/store/apps/details?id=com.google.android.safetycore
Strange. Is your Galaxy A53 6GB model? If so its normal. Solution is to clear ram, check device care. Restart device once a week. Put unwanted apps to deep sleep or uninstall. Set ram+ to Maximum virtual ram you can provide.