Installed mysql 8 on Mac then mysql 5.7 now now they wont work

I have a brand new Macbook pro with Mojave. I installed mysql 8 using the dmg file but realized that Sequel Pro is not playing nice with it and after researching I decided to install mysql 5.7. This time I installed brew and did it. Sequel pro keeps shutting down and my previous database is showing up even though I thought I removed it. Before I reset the mac and start over, is there a way I can completely remove mysql ( all versions ) from the computer and reinstall using brew just the 5.7 version? If this is the wrong place to ask kindly let me know where I should ask and I will.