I have the same issue. For all the talk of USB-C's supposed design for redirecting damage from the ports to the connector, it failed pretty badly here for probably thousands of people. Never had these issues with a barrel connector.

The problem I always had with barrel connectors is that they get loose, sometimes very quickly, and this experience has been near-universal. Even the more fancy barrel-with-center-pin connector found on some PowerPC PowerBooks and iBooks wasn’t immune.

USB-C is definitely no panacea when it comes to durability, though. I’ve had better luck with Lightening and wish the USB-C connector took more inspiration from it.