I had a post, a while ago, on USB C connectors not locking in.Some people would have seen it.
Anyway, I found so much dirt and grime in the socket - on the Mobile, that it desperatly needed
a clean-out.After, loosining the dirt, and using Compressed Air (drained from containing Water),
it locks in fine!!
Probally, using a Old Medium Toothbrush, to 'prod' the dirt out, wouldn't go astray.
Tah, Simon.