What does 'win' even mean in FKG? Whom would you have defeated? Nobody 'loses' in FKG, so nobody can technically 'win.' At most it's a case of 'haven't done XYZ yet, but everyone will eventually.' Playing FKG is a process, not a goal. You can set personal goals for yourself within the game, but that will forever remain your own invention and it will mean nothing to anyone else. If anything, the bars for achieving 'wins' against the software are so low as to be indistinguishable from normal gameplay. Yes, there are potentially frustrating RNG things about the game, both in gacha rolls and in random nodes that don't go your way all the time. But they aren't insurmountable obstacles that can only ever be resolved by Nutaku gold.

FKG is a fun timewaster with sexy artwork. There's no need to try to attach any competition to it. No competition = no win = no pay to win. It's 'pay to be convenient' at best...but in my book that's pretty much the opposite of winning.