What dooo i doo???

So I'm currently in year 13 with some mental health and stress I guess, I don't know what to do, basically to summarise as I'm stuck with two alevels and an epq since I did terribly bad in geography during year 12 end of year exams, my school made me drop it. As I know universities require 3 alevels in one sitting, I'm stuck and don't know what to do and as I had a mindset after they dropped geography of doing maths in a third year after completing my two alevels and epq i recently found out about that universities like kings or other russels in london require 3 alevels in one sitting and ever since I've just been stressed this entire holiday, thinking about what to do. Someone said to redo alevels entirely after my two alevels and epq and do three new ones at some college, I guess it makes sense but is this choice even appropriate? I dont what to do, i had some thoughts about doing geography privately however will i even be able to catch up to like 5 months worth of missed work??? plus the nea I haven't done? I don't even know. the option of repeating alevels sounds good i guess, it's just the idea of finishing university at 22-23 that keeps putting me off and the fact that if i want to do a year in industry It'll be an extra year i guess. My aspirations were to do computer science at russel group uni, I know i was a bit dumb during year 12 and should've tried harder however it sounds weird but it sucks I've just been developing these numercy and literacy and problem solving skills just now recently, that i couldn't of have done in year 12 and stuff i guess.