Lost Iphone in red case in Rathmines

Lost Monday December 17th just after 1:10 pm. I hopped out of my car twice, once on Cambridge Road and a few times along Mount Pleasant. I saw a little girl on the back of a bike drop her spongy toy. I jumped out of my car to try and get the attention of the cyclist and then dropped the toy back on Mount Pleasant at which point I realised that I no longer had my phone. I have a lot of precious audio interviews of my children which I never backed up. Please help!!!