Unless things have changed in the last 24 years * , offers are based on predicted grades, and requirements are set on the actual grades achieved in order for that offer to transform into a place. Those students who did not achieve the requirements and those universities who still have places to fill then enter the "clearing" process to match up.
Were you predicted worse grades than you achieved, and as a result not offered places where you would have liked?
( * they may have, significantly, it's been a long time)
Were you predicted worse grades than you achieved, and as a result not offered places where you would have liked?
( * they may have, significantly, it's been a long time)