The cheapest version of travel planning does not put local events at the center; it is a distraction that costs a lot.
For most people, direct flights and affordable prices are the true initial filters for a destination.
Considering every festival as a decisive factor unnecessarily burdens the validation process.
Here, in the Netherlands, no one chooses their holiday destination based on an event; they first look for the best deal for the period, then see what is available.
If you do not do this, you risk paying double for a flight and accommodation just for a local festival that you could avoid with a minimal delay.