Chosen Solution

My USB C has bad connection in one port at left side. Is it possible to repair this port?

As it turns out Apple did a smart thing with the USB-C ports. They are setup as a replaceable module! Here’s a good view of one of the two modules.

They are quite easy to get to as well, disconnecting them from the logic board and a few screws and out it comes. You may need to loosen up the main logic board to make room to slide it out. The hard part will be finding the part.