Is a prayer from an agnostic meaningful?

I’ve struggled with the concept of prayer since I was a child. I have an empathetic soul, but I’m not religious. I was raised without a religion, but my parents were open to me learning from my friends who were.

There have been many times when I prayed (wished?) for a good outcome for someone suffering. I know of a young boy, age 7, who has been battling cancer for 3 years and he’s struggling right now. His cancer has spread and he will undergo an 8 hour surgery tomorrow to remove some of the tumor from his spine.

Is my agnostic prayer meaningful?

Is it a prayer or just wishful thinking from me?