Charging port is damaged

There's really no easy fix. That being said you can open the tablet up and attach two wires to the battery one should be red for the + side of the battery and one black for the - side, run them to the outside of the tablet in the most invasive route that you can find and then install a " beefier ' charge cord receptcal and attach that to the outer housing with a small piece of two sided sticky tape. Then solder the proper end onto a charge cord to match the new charge cord receptcal.