Before moving forward, have you tried completing an SMC reset? This helps to reset the SMC (System Management Controller) which, then, resets the MacBook's USB-C ports that connect to any power consumption devices (such as your Type-C Adapter). To do this, please remove the adapter from the MacBook and complete the following:

Mac notebook computers with the T2 chip

1. Choose Apple menu > Shut Down.
2. After your Mac shuts down, press and hold its power button for 10 seconds.
3. Release the power button, then wait a few seconds.
4. Press the power button again to turn on your Mac.

If that doesn't resolve the issue, follow these steps:

1. Choose Apple menu > Shut Down.
2. After your Mac shuts down, press and hold the right Shift key, the left Option key, and the left Control key for 7 seconds. Then keep holding those keys while you press and hold the power button for another 7 seconds.
3. Release all three keys and the power button, then wait a few seconds.
4. Press the power button again to turn on your Mac.

Reconnect the Type-C Adapter to the MacBook.

Instructional video: 

https://youtu.be/CS6MKQZMC_I