Gavri

Hi guys, been practicing Ragna abit for a tournament but i can't seem to get the hang of dashing out of moves. DC after 5D is easy, but dashing out of 22B?? i cant seem to get it right. Also having problems with 5B,6A,5C (HJC),j.C,j.D(JC),j.C,j.214C,DASH 6D. They keep recovering after i dash after these! What am I doing wrong? Can someone explain when i should dash out of these plz? Thnx in advance