I concur with the idea of postponing your application for a year, two would be even better. You can use the extra time to work on your ECs and polish your application. You want to apply only once and with the strongest application possible. Right now your portfolio looks … awfully anemic and unfocused.
You say your dream is become a doctor, but you’re not actually doing the right things to make it happen and you cannot articulate why you want to BE a doctor. Neither are positive indicators that you’re taking the whole process seriously.
A couple of comments–
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international medical trips have become controversial in recent years with more than half of adcomms reporting serious reservations about the ethicality of such trips. Unless you have extensive domestic (US) medical volunteering, your international trip will likely be viewed as a big negative by med schools.
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there are plenty of places you can volunteer that aren’t hospitals. Try contacting nursing homes, rehab hospitals, Planned Parenthood, your county health clinic, a free clinic for the homeless, suicide or rape hotlines, group home for the physically or mentally disabled, summer camp or weekend/after school program for chronically ill or autistic children… These sites may be more accommodating of a less than flexible schedule. (Also volunteering in a nice, clean suburban hospital may be pleasant, but it’s not reflective of what an actual medical career is like. Get outside your comfort zone and try to work with disadvantaged population groups–homeless, poor, recent and non-English speaking immigrants, LGBTQIA, mentally ill, etc.)
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@Jugulator20 is correct. Research is not a critical EC unless you are planning on applying to research intensive medical schools. Community service with the disadvantaged, medical volunteering or employment, physician shadowing and leadership are valued more highly by adcomms than research.
See p. 14 to see how adcomms rate the importance of various factors when making decisions about who to interview and accept.
https://www.aamc.org/download/462316/data/mcatguide.pdf
BTW, a gap year or two has become very common, with over 60% of matriculants reporting that they have taken one or more gap years. You don’t need to be in a hurry to apply. Med school will be there when you’re ready.