iphone says it's charging but it isn't

Hi. Thank you for taking an interest in my problem. I don't think I have explained my problem very well. The issue isn't battery life as such, but failure to charge when on the charger. As you can see from one of the screen shots, it shows the phone is connected to the charger but not charging. At least I think that's what the little lightning icon is supposed to mean. In fact, it seems to be using a lot of battery, more than just normal if it's just sleeping. The other screen shot, taken today, shows normal operation: It remains charged while on the charger. This is a pretty bad problem. There have been times when I put it on the charger, it indicates that it's charging, but the phone is dead in the morning. This first shot shows the problem. Discharging while connected to the charger.

I am using an Apple mag safe charger. You can see battery capacity is 98%.

Thank you.

Yes, that's exactly the same. It seems to discharge even faster than if it is just sitting. The mag safe charger works fine for the Air Pods, so the problem is in the phone. Either the interface between the two magnets or internal software that manages wireless charging. Thanks for adding your voice to this. Maybe someone will take notice. It's a serious problem.