Picked up a Cheating Software

The protagonist accidentally picked up an object and was invaded by the object. A blind box system was implanted in his mind, and the memory of his previous life was accidentally loaded into the system. The system skills had no names, but the protagonist discovered that there was a bug in the system. Using the bug, he learned that using this system to reach the peak of life can be reincarnated, or reborn and time traveled. Faced with various options, how should the protagonist choose...