Uninstall Windows Defender - Need TrustedInstaller Permission To Make Changes

When I try to delete this program from the program files and program files(x86) folderes, I get a message that I need permission from TrustedInstaller to make changes. So I went into the properties and changed the sharing settings, to share with myself of course. I have only been able to give myself permissions in one of the folders. After doing this, it lets me begin deleting. It begins going through several screens informing that it is a shared folder, that deleting it will affect other users but it eventually comes back to the message that I need permission to get rid of something on myown computer!