Raspberry Pi 4B Official 4GB RAM

I got this Rpi a few months back, and it has been restarting frequently. I tried to fix all issues including updates and any other background processes but it still restarts for no reason. When there are pending updates it restarts continuosely.

It is too overpriced and its only 4gb version. Look for alternative store. They are selling 4x to 6x times the MRP