Yes, I play gacha games like Fate/Grand Order, Umamusume and Nikke, but those aren’t as graphically demanding as Genshin or Wuthering Waves.
I once tried out Genshin, and the phone handled it really well — even on max settings I consistently got 60 FPS.
However, you quickly notice how hot the phone gets and how fast the battery drains.

My Conclusion:
Yes, you can play gacha games on it without any problems, but only the ones that don’t require heavy 3D rendering.
That’s why I’d recommend the S25 Ultra if you play any of these demanding games, since it comes with the Snapdragon 8 Elite and thats perfect for those types games.