New player questions

Hi I just got into the game and am having a blast playing with friends but I have a few questions to try and improve my gameplay.

First of all I am an Azrael/Kagura player, I do enjoy some other characters like bullet and naoto kurogane but I find them a bit harder to play. I did play some fighting games before but I mainly learned fighting games with guilty gear strive and I play on controller.

First question : how do I improve my finger speed ? I struggle to dash with my joystick so I use my arrows to dash a bit easier, but some imputs require to dash just before (mainly with naoto) and I struggle to do inputs with the arrows that I usually do with my joystick so I figured maybe I should improve the speed with wich i do the dash input on my controller so maybe if you have some tips on improving that I would love to practice.

Second question : The inputs are quite odd since you can't really buffer one into each other, is there a way in the options or some to be able to buffer A>B>C>D into each other ? It would make combos way more easier than having a perfect timing on each move...

Third question : Do you have any Youtuber recommandations that are active on the blazblue central fiction scene so I can gather some tips from over there ? I find dustloop rather confusing sometimes, maybe it s just that I m not used to it yet but yeah I d love to see some actual good gameplay over there.