Should've gone to the nearest poorly funded state school, lived in a poor postcode, gotten your parents divorced, done a lot of volunteering, did NCS, studied your ass off for 2 months during the first year of College/Sixth form, and gotten obscenely high predicted grades. This would ensure you multiple unconditional offers for the best schools and a viable chance at Oxbridge. After you get these offers you drop out and flip off your poverty school and classmates. You then work for multiple-part time jobs, day and night. You get yourself professionally accredited by shi like the LIBF, CII, CIMA, or CFA level 1 passes before September even starts. These are like £100 - £300 max, aside from CFA If not then you find yourself a mentor by literally begging local firms just to do intern work and to 'shadow' them. Don't be weird about it, just be friends with them enough so they can be a reference.
You're welcome.
EDIT: Studying is weird.
EDIT 2: Why aren't you doing this already?
EDIT 3: Sexual favors are optional. Onlyfans should only be your Plan C.