Don't work with actual models. They have inflated egos and think their time is worth more than everyone else's. Offer collabs to regular people (a lot of ppl are very good looking without actually being models) . They will be so grateful for the opportunity to get free pictures, they will not only be there physically but emotionally as well they will bring enthusiasm and gratefulness and passion. They might just need more guidance when it comes to posing etc as they aren't experienced.