Will I be able to get into top universities with my GCSE grades

I’m a Year 12 student who is planning on applying to Oxbridge and other Russell Group universities and possibly Ivy League schools in America to study Engineering/STEM related fields. I was wondering if I would have a chance at these schools with the GCSE grades I received in Year 11.
9- Maths
9- Chemistry
9-History
8-Bio
8-Physics
7-English Lit
7-Business
7-Religious Education (2 marks off 8)
6-English Language (3 marks off 7)
6-Sociology (1 mark off 7)
4-German
I’m stronger in my STEM subjects and am now taking 4 A-Levels (Chemistry, Maths, Further Maths, Physics).
If I were to get 4 A*s in my A-Levels and had moderately strong extracurriculars/ supercurriculars would I have a chance to get into the top universities? I’m really worried that my GCSE grades might make my application less competitive and am seriously considering retaking English Language. Should I be worried (I REALLY want to get into the top schools) and what advice would you give to improve my application to make up for my grades.