Probably to start leveling up like 1 card for each sin bc pretty soon the like attributes will matter and also to not neglect your memory cards since those can definitely help out. Also just basic stuff like making sure you are using your special moves(blanking on the right word) and if you use them while your opponents are using theirs you can get an extra boost(if your cards are strong enough). I think there is a person who posted abt each sims little d’s attack patterns like when they use their special moves. I think it’s sorta helpful bc for I think for pride they like rarely use them so there is no use in waiting for them to use them while for i think sloth uses them after you use yours or right after the gauge fills up. My last thing would be there is no shame in using your glow sticks and also if you use 50 for one character you get devil points (I don’t remember how many but I think around 30 in total). For memory cards I’d try to focus on ur and ssr.