My phone is not working

I have acer liquid z200 but I listed liquid z5 because this site doesn't have it.

The problem started when the phone gradually and frequently started to restart, after a while it turned off and no longer started, the battery was at 30%. I removed the battery and connected the bulb and it turned on, 6 months later I reconnected the bulb to the battery and it did not light. I connected the phone to the charger for exactly 48 hours and reconnected the bulb to the battery and it turned on again, the phone did not show any signs of charging during charging. When I connected the phone to a computer and it said that the device was not recognized and repeatedly showed that message as if the phone was reconnecting itself.