Does re-rolling actually work? I have just found out about re roll accounts and my main account wasn't so lucky on the first 10 pull (one 3 star). I'm trying to save up for the 3rd anniversary dream fest (for Ran and Kanon specifically) and if luck is really determined by the first 10 pull i feel like i have to start over from scratch after saving 30,000 stars for now. Is re rolling that important or is gacha just luck and chance???

Thank you!!