Missed my offer as an international student - resit?

I applied to university as an international student, but I’ve been studying at a private school in the UK for the past few years. I was predicted A*A*A in geography, biology and chemistry. I ended up opening my results to see A*BB. I was extremely shocked and disappointed as I‘ve consistently been working at an A*-A for the past 2 years. I had chemistry and biology sent off to be remarked/reviewed because for biology I was 1 mark off the grade boundary for an A, and for chemistry I was only 2 marks off an A as well. I sent all three bio papers and paper 1 and 3 for chemistry. My chemistry remark has come back and my mark even went down. I now need 3 marks to even secure an A, so I’ve sent my paper 2 off the be remarked even though it was my best paper, just in case it can do anything for me at all. Biology hasn’t come back yet. I feel completely defeated because I was hoping to reapply to schools such as KCL, UCL and Imperial, but if I can’t even secure all As then I’m not really sure it would be worth it to reapply. I would want to resit, but I’ve read up and from what I know, resitting could make my application less competitive (especially as an international student - because of how oversaturated it can be), and that adds onto my lack of direction right now because I don’t know what’s the right choice. If anyone, especially any intl students could offer some advice or share their experiences if they’ve gone through anything similar - with reviews of marking, with the London unis, resits, etc, I would really appreciate it.

Have you let the unis know you are having a remark??

Yes, I have let my uni know. But I’m more interested in reapplying to other unis.

Reapplying or applying through clearing?

Reapplying. I have an offer from clearing but frankly it’s at a university I’m not keen on going to, I spoke to them out of obligation for my parents.

Okay, let's wait for the remark and see what happens (unless you're really not keen on going to your firm/insurance)

There’s a lot of really great universities outside London. Is there a particular reason you’re looking at London only?
What is it you’re hoping to study?

I applied to university as an international student, but I’ve been studying at a private school in the UK for the past few years. I was predicted A*A*A in geography, biology and chemistry. I ended up opening my results to see A*BB. I was extremely shocked and disappointed as I‘ve consistently been working at an A*-A for the past 2 years. I had chemistry and biology sent off to be remarked/reviewed because for biology I was 1 mark off the grade boundary for an A, and for chemistry I was only 2 marks off an A as well. I sent all three bio papers and paper 1 and 3 for chemistry. My chemistry remark has come back and my mark even went down. I now need 3 marks to even secure an A, so I’ve sent my paper 2 off the be remarked even though it was my best paper, just in case it can do anything for me at all. Biology hasn’t come back yet. I feel completely defeated because I was hoping to reapply to schools such as KCL, UCL and Imperial, but if I can’t even secure all As then I’m not really sure it would be worth it to reapply. I would want to resit, but I’ve read up and from what I know, resitting could make my application less competitive (especially as an international student - because of how oversaturated it can be), and that adds onto my lack of direction right now because I don’t know what’s the right choice. If anyone, especially any intl students could offer some advice or share their experiences if they’ve gone through anything similar - with reviews of marking, with the London unis, resits, etc, I would really appreciate it.