DC barrel plug not working

Hi, I am new to Arduino. Th is is my first project I made a Bluetooth controlled RC car and it worked one day when I was using it, it suddenly stopped and the battery was not powering the Arduino. what can be the problem? and how can I fix it

Photos are uploaded too

Photos are uploaded too

I see no photos

Battory ran empty? Recharge it or buy a new?

Are you using a 9v PP3 battery by any chance ?