I think you should continue in freerolls, I feel that as you say you lack the confidence to advance in bigger or different kind of tournaments, and if you feel that way, it is probably because you are correct. Let me tell you that only you will know when you are ready to face different tournaments, you also have to know well that it is not only about being prepared, because even if you are, luck plays a fundamental role in the game, it is useless being prepared if you are not lucky in the game, so from time to time, dare to play a different tournament than freerolls, they say that you always have to think about winning and maybe that will help you. Regards.