I am sorry if this belongs elsewhere--there are a few places I could see this thread being related, but this feels more like a beginner-related question.
I really want to know just how effective the challenge mode is for beginners--and how heavily it can impact just simply getting better. I can't say I'm totally new to BB or GG etc, but this is the first time I've really taken it seriously without just resorting to scrubby tactics and a mindset to match. I use Ragna, Lambda and Hazama for now--and really want to get better. Recently, I've found myself hitting a brick wall with two of Ragna's challenge mode...challenges--one I can get past with difficulty, and his number (7 I believe? It has the Soul Eater canceled into Dead Spike with a follow up dash into C) seems outright impossible; I know its not, but its still giving me trouble.
I need to ask, is being unable to do something in challenge mode a bad sign? Would better players consider it a necessity to be able to be able to finish all challenges to be competent? I figure it just means my execution and sense of timing need more work, but its a bit discouraging all the same, and I'm not entirely sure just how important it is to be dedicating time to challenge mode rather than outright training or fights.