Genshin Impact

I'm AR 45 (as far as i remember) but my dps usually deals 20k max damage with food buffs and all. I recently just jumped into properly building my characters so I've been farming but my friends said that they'll help me first build up my characters until maybe 30k damage coz I might get bullied in lvl 90 domains if I farm on my own. Is it really that bad when your damage dealing is low?

i wanted to play the game but it won't work with my old ass phone and trying to get it on mac is too complicated for me. i've seen people talk so much about it but the character that made me to download it is la signora. is it good for f2p players? why does it take up so much space?? and when is it coming on the switch?? are there any good alternatives for it?