iPhone 14 Pro charging port not working

First, use a flashlight and see if there is any debris or lint within the charging port, and if so, use a wooden toothpick to carefully get it all out. Second, are you using an Apple-certified charging cable and adapter, which you should be doing. Third, try using a different outlet. Fourth, restart your iPhone.

You should also review: If your iPhone or iPod touch won't charge - Apple Support