How to terminate the local mysql/mysqld process locally running in MacOS

In my Mac, I was trying to install an application called Vanilla (https://github.com/vanilla/vanilla-docker), which is an open source Q&A site application, based on PHP. This application also required to install and to run MySQL. This application came up with an automated installation tool, but I got stuck when it came with a message that complains that there is already a port that uses the port 0.0.0.0:3306. I ran the following command initially to find the application that uses the port: