Okay. That’s one of the most common drivers. It should have been installed on your computer but there may be other things going on.
Go to this site:
GitHub - adrianmihalko/ch340g-ch34g-ch34x-mac-os-x-driver: CH340G CH34G CH34X Mac OS X driver
Follow the installation instructions there. It will have you deleting any existing driver. Circle back if something unclear.