Genshin Impact player (I also play other games time to time)
I am hydro main but I have my own rules that I follow
1.Use hydro characters only
2.Anemo swirl hydro so they can be used if needed to
3.Other elements can be used whenever the quest wants us too when there is no other options
4.Cryo and Electro are only used for bosses that grants us ascension for hydro characters and also for domains that grants us artifacts and other items for hydro characters
5.I won't be fighting hydro enemies that are immune to hydro unless quests and daily commission made us do otherwise