Setup Admob Mediation for Unity Games

I am looking for someone to help me setup Admob Mediation for my Unity Games specifically for Android & iOS. I do not have a Firebase SDK installed, but I already have an existing Admob account set up. I need someone who is experienced in Unity & Admob Mediation to help me configure it as quickly as possible. If you are able to help me, please let me know. Thank you.