Responses
It's normal that you get one 4 star every 10 pulls its guaranteed.
It's like a pity but for 4 stars, you're guaranteed to have one every 10 pulls and for 5 stars you're guaranteed, to have one every 90 pulls but you can have one before the pity. It doesn't change anything in the probabilities, it doesn't increase anything.

Hey guys just wondering... is it better to wish once or do it all in ten?? Which one do you do ╮( ̄▽ ̄)╭