Your drone did not disconnect and crash.The first one it was determined to be a malfunction of the drone and this one just disconnected mid flight and crashed.
Disconnection doesn't cause a drone to crash, it initiates RTH.
Your drone appears to have lost power like the first one did.
That causes a crash.
If this happened to everyone who flies one, you couldn't.So again I ask how can I trust them?
But thousands of users fly them every day without any incident.