Think just for a second. If God the Father and Jesus are one God, then that one God was cricified. And that one God was resurrected. That has to make sense to you.
They are both included in that one God. That one God was born, cricified, resurrected. Both of them had to go through the exerience together.
If you say God the Father and Jesus are one God, but only Jesus was crucified, and only Jesus was resurrected, then they are not truly one.
We believe that they are 2 separate and distinct individuals, so God the FAther sent his Son Jesus to the earth, Jesus only was born of Mary while God the FAther stayed in heaven, Jesus only was crucified, while God the Father looked on, Jesus only was resurrected, while God the Father waited for him in the heavens. Etc.
It all makes sense if God the Father and Jesus are 2 separate and distinct Individuals (and yes, I will call them Gods)