"Am I a reapplicant to all schools or only the ones I applied to before?
You are only a reapplicant to schools that previously received an AMCAS application from you. For example, if you applied to School A and School B last year, you would be considered a reapplicant at both of those schools if you apply to them this year. You would not be considered a reapplicant at School C since you did not previously apply to that school.
You will indicate your reapplicant status per school in the Medical Schools section of your application. " (1)
(1) Taken from AMCAS FAQs at
https://students-residents.aamc.org/applying-medical-school/faq/amcas-faq/
And to answer the OP question: Work on yourself and areas of weakness. There are more things you have control over than you think. The way you write, your extracurriculars, the MCAT, employment, shadowing...all of these things are within your power to change. Will it be easy? Not if you're doing it right. Can it work? Anecdotally, yes. Zero interviews my first time. Two years later, 5 II and 1 acceptance so far. I say that to this to say: it is possible.
Good luck to you!