@Harriet110 So you are talking about finding a place to rent, as opposed to looking for a place to buy, that will allow you to run an Airbnb? That's totally different. You are correct, most landlords won't allow it, and for very good reason, likely having nothing to do with your approach. Their insurance wouldn't cover damages by Airbnb guests, and Airbnb has very little protection for hosts in this regard. Ask yourself, if an Airbnb stopped up the plumbing, necessitating expensive repairs, is that something you would be prepared to shoulder the cost of? Or would you expect the landlord to?
When a landlord rents to full-time tenants, they normally ask for refernces, employment history, recommendations from previous landlords, etc. There are no such precautions and guarantees when having Airbnb guests in one's home.
Airbnb isn't some easy way to make money. It's hard work and requires constant vigilance and expenses can be much greater than anticipated.
I wish you luck in other aspects of your life, but not in looking for a place to rent that you want to turn around and list on Airbnb. As a home owner and Airbnb host myself, knowing what I do about the risks involved, I would never allow a renter to Airbnb my home and I would be furious if I found out they were doing so without my knowledge.