Gap year/resit advice

Hi, last week I received my A-Level results and I’m really disappointed. I got AAA in Biology, Chemistry and maths. 6 marks off in Biology for an A*. I had quite a lot (not good) going on at home with my parents, which is my no means an excuse but I can’t help to think how things could have been if I didn’t. This caused me to miss my Edinburgh Chemistry offer (A*AA). I did however get accepted into UCL as my insurance but I’m still upset.
Towards the end of year 13, I realised that I don’t want to do Chemistry and that I should have followed my heart and not my head by doing Geography/International relations at Uni. My decision to apply for Chem was mostly due to my parents/other people’s opinions.
I’m not opposed to be taking a gap year as it would be a great chance to go to south america and improve my Spanish for a few months, whilst I make a new UCAS application.
This is where I need help, I really want to go to a top University for my course, I’m thinking LSE or Edinburgh or UCL again, (I’m over Oxbridge ahhaha) Their offers are AAA-A*AA. I know I’ve don well enough but I can’t help but feel like I can do better, considering my mocks were A*A*A and were past papers. Could I do a resit to get maybe one or two A*, and would Universities look at that unfavourably? I know LSE is very competitive, likewise with Edinburgh.
I like keeping myself academically stimulated so I suppose it would give me purpose, are there any other things that I could do to stay engaged with learning?

I have a lot of options and I’m really stressed so any help would really appreciated.
Thanks!

Hi, last week I received my A-Level results and I’m really disappointed. I got AAA in Biology, Chemistry and maths. 6 marks off in Biology for an A*. I had quite a lot (not good) going on at home with my parents, which is my no means an excuse but I can’t help to think how things could have been if I didn’t. This caused me to miss my Edinburgh Chemistry offer (A*AA). I did however get accepted into UCL as my insurance but I’m still upset.
Towards the end of year 13, I realised that I don’t want to do Chemistry and that I should have followed my heart and not my head by doing Geography/International relations at Uni. My decision to apply for Chem was mostly due to my parents/other people’s opinions.
I’m not opposed to be taking a gap year as it would be a great chance to go to south america and improve my Spanish for a few months, whilst I make a new UCAS application.
This is where I need help, I really want to go to a top University for my course, I’m thinking LSE or Edinburgh or UCL again, (I’m over Oxbridge ahhaha) Their offers are AAA-A*AA. I know I’ve don well enough but I can’t help but feel like I can do better, considering my mocks were A*A*A and were past papers. Could I do a resit to get maybe one or two A*, and would Universities look at that unfavourably? I know LSE is very competitive, likewise with Edinburgh.
I like keeping myself academically stimulated so I suppose it would give me purpose, are there any other things that I could do to stay engaged with learning?

I have a lot of options and I’m really stressed so any help would really appreciated.
Thanks!