I'm sorry to hear that and I imagine many of us can empathize with your experience. From this process, the one thing I've learned is that there is no "perfect formula". One thing that HAS stood out to me as being really, really important is the relationship with the professors you're applying to. I applied to clinical programs last year (I'm Canadian) and didn't get any interviews. This year, I focused a lot on building relationships with my three top choices (e.g., volunteering, meeting at conferences) and was interviewed at all three of those schools - I was rejected from everywhere else without an interview.