Other tip for observation haki: You get +1 dodge if your human but if your another race than human it will go down by 1 so make sure you have human while using observation haki.
i knew this but heres a tip you can use instict to escape combos A.K.A ken trick combos. so you use your instict at a part of a combo where theres a move you can dodge and the combo gets dodged and you can flashstep out go watch a tutorial for more ken tricking. anyway have a nice day