While I do enjoy fantasy, especially when featured in anime, there are several cliches I dislike.

Now before we get started, this is asking about what you may dislike in anime fantasy settings, so things like whether the protagonist is good or not or the existence of harem are not among those.

These things could include the locations, non human races, monsters, deities and magic.

Here are my personal pet peeves:

1. Non-human races like elves, lizardmen etc. are too human, be it look very similar to humans or act very human like. This is especially jarring when a female lizardfolk reacts to a human man accidentally touching her in a way that a human woman would. Even moreso when females of many non human species have attractive woman features like breasts despite not having a reason to.

2. Monsters such as orcs, hardly feel threatening, are either jokes that the "heroes" can slaughter with ease or are too humanized. Goblin Slayer subverts this.

3. The local deity being made the ultimate baddie and to a lesser extent, the local church being corrupt with not decent indivduals. Fire Emblem Three Houses subverts this.