Can I get into Cambridge with my results?

Cambridge to study what?

I did 4 A levels and nobody cared.

I would still do 4 given the choice again because i enjoyed all 4 and because of vanity reasons (I should say I got A*A*AA in Maths/Further/Chemistry/History 2UMS of an A* in chemistry >:I). Imo, you get more than enough free time even when doing 4 A levels. If you do 3 then like 50% of your time is frees and idk what I would even do with myself. It also means if you bomb in something then you've got a spare.

I know someone who got into Cambridge with A*AAA* in Maths/Further/Physics/Computing so I guess you don't even need the A*A*. STEP is far harder than A level further maths. Take a look at some STEP papers (they will most likely be well beyond you atm) because if you do well in STEP and present yourself well then they'll have you.

Personally, I dislike the fact that A*s exist at A level (even though i got 2). I feel like the difference between an A and an A* is mostly luck. Especially in subjects like history. I suppose it distinguishes between those who scrape an A and those who are well beyond one.