You are now in the rank and file of your state's premeds. The alleged asset of doing a BS/MD is over, done, put it behind you. Wash your hands of it. You may not be required to disclose that you did a BS/MD at all, depending on how your transcript reports things.
If there are other public med schools in your state, then stop focusing on your alma mater for med school. You owe them nothing, and getting in there won't undo anything. Get into the cheapest, best med school you can get into. If that's your alma mater, fine.
Now, imho, there is one big huge thing you need to do, and three less huge things you need to do.
Big huge thing: <there isn't a nice way to say this, and you asked for my thoughts...> Grow up faster if you can. Your school's feedback on your med school interview, and your inability to meet the BS/MD requirements,
clearly says to me that maturity is
the problem here. If you have been living with your parents, and/or living on their dime, then you haven't had a ton of opportunities to make mistakes and clean up your own messes and be responsible for nontrivial things. This isn't a bad thing for the average 21-22 year old, per se, but it's likely keeping you from knowing what responsibility and leadership are, which is likely keeping you out of med school, and it's likely hurting your decision-making capabilities. People my age (over 40) look at 21-22 year olds who are trying to get into med school, and we think "would I want this person making decisions about my health or my kids' health any time soon?" They aren't interviewing your parents. They aren't interviewing some potential fictional future you.
One piece of advice from my past that I love is this: believe in the product.
You are the product, and you have to get a med school to
buy you. Would you buy you? Would you guarantee you? Would you take a risk on you, instead of taking a sure thing with another product (another med school applicant)? What do you need to do to be a confidence-inspiring, reliable product?
You have an opportunity to take responsibility, to clean up a mess, now, by putting in the time and effort and commitment to overcome your undergrad performance so far. It may take more than a year. It may take skills you don't have yet. It may take a ton of humility. It may not be worth it down the road. But it's an opportunity.
Only a
subset of the job of a physician is learned in med school and residency - much of the job is having a powerful work ethic and having people skills and being responsible. You need to master work ethic, people skills and responsibility
now.
Less huge thing #1: as your school told you, you need more and better clinical exposure. Other than your thesis, your EC list looks like a high schooler's. I suggest you may be thinking like an MA/CNA/LPN. You need to think like a
doctor. What are doctors responsible for, in detail? What are their obstacles on a daily basis? What are they thinking while they're working? What do they have to know about people and processes to get their jobs done?
Use your next clinical volunteering gig to get access to a variety of physicians. Try to get multiple docs to tell you what they hate about med students (and then obsess about how to not be like that). Try to get multiple docs to tell you why you shouldn't do medicine (and then obsess about whether these complaints are valid for you). Try to get multiple docs to tell you about their nightmare experiences with clinic/hospital administration.
Less huge thing #2: Take enough additional difficult undergrad science to demonstrate (to yourself!!!) that you can be the A student you need to be, for med school to not suck.
Suffer for a bunch of A's. One more year of undergrad, taking a more-than-full load of all science, at a 3.7+, is what I'm talking about (not a class or two, not retakes, but fresh painful difficult classes). That may be all you need to do for coursework. Or, you may find that you need another year to get it done, and/or that you also need an SMP. Comebacks don't follow a schedule.
Less huge thing #3: Break 31 on the MCAT with no less than a 10 in each section.
There's plenty more to do, such as getting LORs, writing good essays, and making sure you apply early and broadly.
Bottom line: make sure you really, really, really want this. It would be healthy to make sure you have a clue about other careers as well - how do you
know that medicine is the
only thing you want to do?
Best of luck to you.