Samsung Galaxy A34 Keeps Restarting Randomly Without Use

I have been using my Samsung Galaxy A34 for about two years, and over the past 5–6 months, it has increasingly started to randomly shut down and restart on its own. Even when I am not actively using the phone during the day, the device suddenly powers off and reboots at random times.

This issue seriously disrupts my user experience and also makes me unable to trust the device and the data stored on it. I request that Samsung investigate this recurring problem, provide a proper technical explanation, and deliver an effective solution.