Why my phone is not charging

@athu68960 this "showing low battery temperature" is common with a bad battery. Replace the battery and reevaluate. Since iFixit does not yet have a guide for that, use something like this video to accomplish that. Batteries are readily available at many online stores.

If a new battery does not work either, then you are having issues with the main board. Apparently this is somewhat common for this model and there are many YT videos like this one that show a possible solution. Try a new battery first. If nothing else, it will at least give you a known-good starting point for further troubleshooting.

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.