Thank you! I replaced the USB-C Port with this guide and fixed my iPad Pro 12.9 2018, easily!

I followed every step, excluding Steps 38-41 (in my case, it wasn't needed to access the charging port at Step 42). Still, things were very straight forward and this guide definitely brought success to fixing my problems!

My local stores were trying to charge $220+ for the same fix.. instead got it done myself for $50 buying whatever needed.