The game only intentionally becomes harder if you advance through the days quickly, as this causes you to miss opportunities and penalizes you for using that feature.
There are items in the shop you can purchase to remove negative events or host certain characters
Negative events only happen when too many days pass. The game isn't about advancing days quickly, since you only earn the minimum per day.
Try claiming anniversary tickets with codes in the store and using them to support yourself.
It's like investing; you have to invest quickly so you can have two guests and be able to charge them. Try restarting the game if you've spent too many days or using the event tickets and selling them.
Thanks for you data <3.