Hi @Aileen16
Sounds as if you guys are new to airbnb as well as your guests.
Please have a look at the help sections on Airbnb's website and the community guides on these forums so you understand all the basics around how airbnb works.
Pay special attention to how cancellations work, instant book, house rules, deposits and host guarantee (you need your own home insurance for short stays too).
I notice on your listing you have no charge for extra guests. I would change this straight away.
Have a look at what other hosts near you with comparable properties do. Normally you would charge an additional per person charge after four guests I think.
Also you need to tighten your house rules a lot. Particularly around noise, extra guests, visitors, expectations around cleanliness etc.
If you are an absent host, you will probably also want to consider CCTV so you can see who is coming and going from your property.
Good luck.