As someone who it took 5 tries to get in to Mac (year 1 of trying- no interview, year 2-4 interviewed but no offer and not waitlisted, year 5 interviewed and offered admission) I offer this advice:
Use this year to reflect on what ways you feel you can improve your application and prepare for your guaranteed interview next year. Use this year to your advantage, whatever that may be for you. This is huge to be able to not worry about whether you would be granted an interview or not. Every year I had applied I didn't know if I would receive an interview and I feel very grateful for the opportunity I have been given. Yes , I can imagine you are really discouraged about how this year's admissions process has unfolded but don't let it get you down. Sometimes disappointment like this can be a silver lining that is yet to be discovered.