Corrupt Kodi on my Mac

I did a very stupid thing and downloaded a 3rd party and now my Kodi is corrupt. I have deleted all of the Kodi files twice and I still get the message. Every time I try to open the new installed Kodi my Mac tells me it is corrupt. Can someone help me with this problem? I am new to the community forum and I find it daunting to find where I need to post, so if it’s not right please forgive me. Thank you!!!