My charging panel don't know if it is still working

@onyehanere64273 three things come immediately to mind. The battery, the charging board, and the Power management IC for you charging circuit. At this point I would suggest you start by replacing both, the battery and the charging board. IF that should not yield better results, you will need to take a look at the schematic and see if you can figure out the charging circuit. So, let us know what you find.

Since iFixit does not yet have a specific guide for your phone, use something like [https://www.youtube.com/watch?v=7-fT_DPk... |this video.} around the 1:40 min mark you can see the charging board. Both, the battery and the charging boards are readily available at many online places.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this. Repair is War on Entropy!