French language Q&A Forum

I already tried submitting this question via the quiz: In a multiple-choice question I was supposed to fill in the answer for Elle est ________ aux jeux de la toupie dans notre groupe, or some such similar question. I got it wrong by selection le meilleur over la meilleur(e) It is not made clear in the the lesson on meilleur vs. mieux why the quiz answer should be la meilleur and not le meilleur. ... After all there may be males in the group considered in the for who is the best at the game."

To say I feel bad, would you write "Je me sens mal" or "Je sens mal"?