@Mélanie80,
As pictures are not shown before a reservation is confirmed, you will not see them anyway.
New guests do not have reviews, you can see the month/year of creating the account on the profile.
You can ask such guest to verify their ID with Airbnb and some personal questions. I always ask for example "what is the purpose of your stay ?". It is my experience a new guest with proper answers to my questions can be a good guest. And a serious guest will do the ID verification prompt if been asked.
If somehow i am in doubt about somebody, i do not accept reservation.
best regards,
Emiel