@dawitshemsu your charging port is soldered to your motherboard. You will need to remove that. Since iFixit does not yet have a guide for this, use the one [https://www.nadiemellamagallina.com/en/manuales/smartphones-1/samsung-4/samsung-galaxy-j6-859/placa-base-7481|from here] Now, you have to desolder the old port and solder a new port on. Replacement ports are available at places [https://www.ebay.com/itm/354237733251|like this] and many others. Check something like [https://www.youtube.com/watch?v=gUSQwmzA3oE|this video] to check the whole repair.
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 the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.