Customize Core App - Courses to Display Only My Courses or Set My Courses as Default Filter Option

We need the ability in the Core App - Courses to set the view to just show My Courses. We don't want all of our users to see all of our available courses because some courses are for specific partners with unique content. Right now the default is All Courses and then the user would need to change the view to My Courses. We want to remove that option so it just shows MyCourses. If that's not possible then at least give us the option to set My Courses as the default filter option. The vertical course display is the look we're wanting but not if we can't control the view. Thanks