Itch very likely does not react to sudden spikes for a lot of reasons.
Like this https://itch.io/t/6623069/my-game-appears-to-be-getting-view-botted
And if I look at only the graph you showed, not shifting your position by much, would seem reasonable. After that random spike your traffic returned to the same plateau it had before.
It might help long term, if you actually use some relevant tags. The ai generated tag is redundant, now that ai info is displayed in the info box. So you only use 5 of your 11 tags. And all of those tags have a lot of competition.

