Try getting some contact cleaner in gently so it can sit and dissolve the gunk for a minute or two, then give it a full blast squirt to try and eject the dissolved gunk - kitchen towels or newspaper may help catch debris. Hopefully you have the kind of can with the "straw" applicator like WD40.
Be careful with what you use as in USB-C all the contacts are on that central spine in the socket, wedge something in too enthusiastically you may bend that out of line.
I found the plastic micro brushes too brittle, but a fine wire based interdental may work.
End of the day decide where your hassle threshold is, at some point some mild dash deconstruction and a known good module from
@Absolut5 may be a better path.
