@Libby
I can sympathize with you and am sorry for what you are going through.
Most days I'm agnostic and some days I'm atheist. Many days I feel empty and that life is pointless and meaningless. Other days I try and have a hope in something.
Sometimes I pray to whatever is out there. In my prayers I confess that I don't understand their purpose, let alone which is the true religion. Sometimes I give thanks although I confess that I don't understand why I'm blessed in certain ways while others have nothing; I feel like a hypocrite. Sometimes I apologize for my sins although I don't understand why I should apologize and why God is testing us and allowing suffering in the first place. I ask that whatever is out there, reveal itself to me.
That is the way I pray. I open up my heart, try to humble myself, and wait.
Hope that helps.