Very good game been playing for 2 years now . I see that a lot of ppl complain about , how hard the game is . Well in the begining it does,  but i want to remind some of you that YT guides is out there , so if you get stuck go watch some of them . Game is very generous with the Gacha within 50 pull you will get a 6* ( 2% drop rate ) , if your luck is bad and didn't get a 6* in the 50 , it will count into 4% drop chances per 6* , the next 50 pull . Every 50 pull if your luck still suck it will keep counting up , when you get a 6* it will reset back to 2% . Honestly tho i would say that the begining,  you don't need any 6* just use 1 or 2 that the game gave you (  within the first beginner banner ) , then lv up all of your 3 to 4* in your team . So yeah just save all of your resourse that you get , or roll 1 or 2 more chacracter  that you like . ( btw the 1 and 2* in the game is really good too so don't ignore them  )