Hello @Bu-Poates0,
I wholeheartedly support your outlook. Economists talk about the law of supply and demand but I don't see why everyone HAS to increase prices just because they can. I charge the same price irrespective of festivals, weekends etc.
In Airbnb, apart from price, two things you have at your disposal are your cancellation policy and minimum number of nights.
You could change your cancellation policy to "strict" until after the event. Of course that will apply to all bookings made while it's set that way even if they aren't for that period. You could set your minimum number of nights stay to 3 or 4 nights for that period so as to get only guests who were serious about staying for a longer time.
Steve.