Do I

So I am applying to university again because I didn’t meet the entrance requirement. My predicted and internal transcripts are good so can I just apply with predicted grades again and then meet condition using my resit grades?

In your new UCAS application you'll need to enter each subject you're resitting twice, once with the original date and original grade, and once with the new date and a "pending" grade (which your referee can change to a predicted grade).
You can't omit qualification you've taken exams for. From this page on the UCAS site (with their emphasis): "You must enter all your qualifications from secondary education onwards – whether you have the result (even any that were ungraded) or you’re still awaiting exams and results."

okay thankyou but the only reason I am taking a gap year is because the results are very different from what I expected and rechecks are very expensive in my country. If I declare the bad grades I’ll have no chance at the top schools, can’t I just not declare the achieved Alevel grades how would they know?