Iphone not charging

I have an iphone X 256GB and i am having trouble charging the device. The battery health is on 88% but when i charge it with a cable it doesn’t charge only drops but it picks up thats its charging. I could listen to my headphones and use the usb cable to transfer files over my laptop but cant seem to charge it over the cable I can only charge it wirelessly. So now I’m wondering if its the battery or charging port of the phone even though it does pick up that its charging maybe there isn’t enough power being transmitted through to the device