Don't use your mouth to blow into your USB-C port, as the moisture from your breath can damage the contacts.

Insert the tip of a dust blower, or the nozzle of compressed air, at one corner of the port.

This gives room for any debris to eject out of the port.

Blow a few puffs of air into the port.

Plug in your device to check if it works and if the connector is fully seated.

If your device isn't working or seats properly, unplug it and repeat the blowing process.

If your device still doesn't work or sits properly after multiple repetitions, move to the next step.