i only half level freeze ( if thats a thing) collect only exp fro events such as 9 tails and Jin and i have 55k-58k power (5 star team) for lvl 83 so i dont think its hard.

Although i will say i only learnt to lvl freeze at around lvl 70 was gonna collect lvls like crazy cuz i had like 24k power and was falling behind thinking it was becuz of lvls. but as soon as it hit 32k power around lvl 77 i realized that lvls dont mean that much and i should take it slow since i'm super F2P.