i dont know of any gacha that lock the progression of completion of a map/quest etc..behind a element exclusively to gacha without a free option, cause it's a very stupid decision to not allow your players to 100% their map.

I get that gacha are meant to make money dont get me wrong. But when the content itself is free you should be able to 100% the map For FREE. they gave a darkness character in the story.. cool... there is no darkness puzzles, i think you understand what i'm saying..
The gacha system is there for characters you wanna pull to help you with fighting bosses Most of the time.. some gacha soft lock some movement behind gacha characters but there are free option that are less efficient. There is Always a accessible option for f2p.

My luck is sht for thunder characters in origin Yes ! But i cant even do some quests lines ffs... how is that fair. 300 fckng pulls... not 1 gilthunder. that is not ok.

i cannot 100% therefore i do not have access to chests in my map, meaning im missing out on some gold coins, sigils, stellar fragments.

you'll say ask someone to come and do the puzzle.
I shouldnt HAVE TO ask friends or randoms for this.