What component could be not working to charge up the battery?

Model is SM-A207F/DS.

I basically cannot charge the phone.

I will insert the charger's cable and it won't even show as charging. Tried different cables that work on other devices.

I changed the logic board where the usb-c charger cable connects to the phone but it didn't solve the problem.

I changed the battery but that also didn't work.

I thought probably there's a cable bringing power from the Logic board to the motherboard that is then connected to the battery and that could be the failure point. But which one is it? and could it be the case at all?

Maybe it's one of these two Flex cables.

can you confirm this hypothesis?

I've read these two cables are for data transfer only and the only other cable I see between the two components is the antenna.

So I'm at a loss for diagnostics ideas