I recently started speedrunning this game and i found a speedrunner called vysetra who used a dodge dash like move to travel faster but i can not figure out how to do it and was wondering if anyone knows i left a comment but thought i should ask here too as i havent got a response yet it is used at 0:33

This technique was pioneered by BYAkuma, and featured pretty heavily in tokoname's runs too. You can find my explanation of it here.

Essentially the inputs are:
Back + lock-on + jump + style, and you hold back + lock-on and then mash jump + style.