are my gcses too bad for cambridge?

I am a Year 12 student and I really want to go to cambridge for physical natural sciences in chemistry, and i achieved 788888999 at gcse, with 988 in the sciences. I’m sorry if this comes off as egotistical because i’m aware that these grades are pretty good, but i’m afraid that they are not oxbridge material. is it possible to get into oxbrige without all 8s and 9s, or all 9s?