I am struggling in year 10Watch
Do not give up on your studies.You could ask other students for help, but keep in mind that other students are not always the best at explaining things. Try and find revision websites that will help you, such as BBC bitesize.
If you can find a private tutor, then go for it. There is no shame in telling your parents that you would like a tutor to help prepare you for your exams. A good private tutor is the best asset a student can have. Believe me.
If all else fails, then the worst (yes worst) advise I can give you is to priorities your subjects. To be a doctor you need to be good at 3 basic subjects: Mathematics, biology and Chemistry (and maybe physics). Aim for the best grades in those subjects. With good grades from those subjects you can then move on to A-levels. From there, you put in some hard work, get the best grades and you will be in medical school soon.