You can try the following steps to see if it helps resolve the issue...
-From Your apps right menu (with arrow sign) choose Show system apps
-Clear cache & Clear data
You can activate the Safe Mode option through the following steps:
- Restart your device
- When it shows Samsung logo, you have to press and hold the volume down key till you reach Safe Mode
- You can try to observe the device for Two or Three hours
If the device is working fine in the safe mode, it means that this issue caused by some Third party apps you already installed on your device in the normal mode. Kindly check your Third party apps. and remove them one by one until resolving the issue.