Random thoughts:
There’s a saying about med school application process (It’s a marathon, not a sprint.) There’s no rush. It’s best to apply one time with strongest possible application. If that’s 2021 or 2022 or 2023, or whenever, so be it. More applicants today take gap year(s) to strengthen their med school apps. There are people who start med school in their 30’s, even 40s.
It would help if you could provide:
your overall GPA (this includes any college courses taken in hs)
your sGPA. (A sGPA is calculated for all bio, chem, physics and math (BCPM) courses taken)
are you GPAs for first two years steady, or uphill/downhill trend
have you taken ochem? How’d you do?
I assume you haven’t taken MCAT
As to ECs:
Research is not a mandatory EC especially if you are planning a career in primary care.
A humanitarian med trip will probably be of little to no value for most med schools. You’re better off looking for volunteer activities closer to home. I will defer to @WayOutWestMom to expand on possible ideas for ECs.
If medicine is your lifelong dream, then you simply must make the time to be available to find and get involved in ECs. There are other areas of health care you may find rewarding. You absolutely need a Plan B. Good luck.