What should I do?

If your this unsure about your alevels there is no point in you taking 5. If u are looking at more competitive universities for finance then you may consider fm. Sciences arent needed to study econ.

5 would be a complete waste of time and would likely harm your chances of getting decent grades.

Thank you so much for answering my question 😊. Well, I'm giving my Alevels through my school and they have a very limited amount of subjects (they mostly have science subjects), so it does make me hesitate a bit. On the other hand, my dad thinks that I can easily cover 5 subjects because in his eyes I'm a very talented student (I'm not 😅).
I'm currently thinking of taking the second option, because psychology looks interesting to me; plus I've noticed that the syllabus covers a lot of economic situations (consumer demand).
Am I making the right choice thinking about picking the second option?

Are you in a private school? Why cant you take 3? Less than 0.1% of people in the entire country took 5 or more. Getting 4A*s is the peak but 5 is unnescessary and a waste of time. A levels are a massive step up and if you dont think ur that talented u should be taking 3 tbh. 4 alevels is still pretty difficult.

I'd also note that the majority of people doing 4 are taking Maths in lower 6th and Further Maths in higher. They're not all sitting 4 lots of exams in upper.
It's a lot.

Thank you, you just reminded me of something very important. Aside from statistics, what maths will help me in actuarial science or economics?

Not something that I can help with but a good question to ask on open days, (or just contact academic depts running courses that you are considering).