You can find out if it’s a scam by doing a Google reverse image search on the photos or using TinEye, checking if they’re posted in different cities at the same time and that each ad has different phone numbers but keep in mind that many providers have ads running in multiple cities at once (nearby) so that prospective clients from a city they tour in sees them - having ads posted in multiple coyotes isn’t always an indicator of a scam. Search if they have reviews, social media, google their phone number from the ad, google their name from the ad. When in doubt, always trust your gut! If it feels off, don’t proceed.
I hope this helps as some guidance! ✨