That’s a practical approach, and it would be equally practical (probably more in fact) to have a plan B. Even for British citizens, you can’t use all your UCAS choices for medicine (to avoid the risk that the applicant doesn’t end up with any places) - with that as one indication of how hard it is to get in, you can multiply that for an international.
The fact just is that most people who practice as doctors get their medical degrees in their home country, and if they want to move abroad they then get licensed in that country as well and there are often various hoops to jump through, but it’s doable… and almost always way cheaper. (I know people who trained in my home country who are now practicing in the US, Canada, Australia and the UK.) but if this absolutely isn’t an option for you then I second the suggestion that you need to have some other healthcare alternatives for college.
Do you have any budget constraints? Whether med school in the US or MBChB in the UK, you are looking at hundreds of thousands of dollars for which you are unlikely to get funding. I’m asking not to be nosy but to think about what other options you might have with that budget.