@Carol7337 I think your decision to stop using Airbnb (or at least to rent rooms in shared households) was the correct one.
There are some obligations that Private hosts have to their guests: to provide all the amenities advertised in the listing, to guarantee access to the rented space throughout the stay, to deliver a smooth check-in and a safe and sanitary guestroom on arrival. But your "strict budget" is not paying for the hosts to adapt their lifestyles and personalities to your personal preferences. The people you're staying with aren't obliged to be in customer-service mode every time you're within earshot; they are simply living in their own homes. If their home life involves swearing, drinking, smoking, arguing, and expressing different opinions on religion, none of that is going to change just because their guest doesn't like it. They do have the right to be themselves at home.
How do you deal with a "rude" person when you're living in their house? Well, someone of your faith might ask "What would Jesus do?"
I can tell you what not to do: leave confrontational messages like the one you showed above. That's guaranteed to create more friction in an already-fraught relationship. And carrying around your phone recording people in their own homes? I can hardly imagine a worse idea than that . If you don't want to cancel the booking, you can keep to yourself and avoid conversation. And while it's not nice to be told you have "no life," I'm sure that the more time you spend out of the home or engaged with your personal activities, the less bothered you'll feel by the personality conflict. If you're genuinely interested in repairing this relationship, there are de-escalation strategies you can try. But if you're already looking forward to trashing someone in a public review, I'm not confident that conflict resolution is in your toolkit here.
In hindsight, you might recognize that you made a very risky choice by committing to live with a stranger for a month. You might have mitigated this risk by choosing much shorter bookings, or by using the "Contact Host" feature and engaging more dialogue before booking, to test out if your personalities and values are truly compatible. If expressing your religious identity is important to you, it might make more sense to reach out to your denomination's church community for accommodation options and stay with people who share your faith. And as @Amanda660 wisely pointed out, it's important to match your budget to your needs; if you're stressed by sharing living space with people you don't click with, you might have to re-scale the travel ambitions so that you can afford to stay somewhere by yourself.