how do I uninstall (delete) CleanMy Mac ?

Experienced users consider CleanMyMac to be malware. The trouble with these types of apps is that they spray their seed into every nook and cranny of the operating system which makes it very hard to get rid of them completely.

Here’s the developer’s instructions on removing it.

https://cleanmymac.com/how-to-uninstall-cleanmymac

Glad I could help.