The results suggest that before you move on to "Olympiad Mathematics Training" you need to work a bit more on a few things like "formal proofs", "counterexamples", "formal logic". This is what "For beginners
" courses are about. They are not hard, but extremely important. In your case, we would suggest doing the "Constructions, proofs a few nice ideas" course.
If you think that you made some silly mistakes in this quiz, then you can try the next quiz
and see what it says (but note that it is harder).