When I used to say I'm spiritual, it meant, I believed in god, felt I had a personal relationship with him but didn't fukk with religion at all.
Now, I'm just agnostic.
agnosticism doesn't mean what you think it does.
Agnosticism only answers what you KNOW. You don't KNOW if there a god.
Theism deals with what you believe.
Do you believe there is a god? Yes or no.
Do you know if there is a god? Yes or no.
I don't believe there is a god (based on the lack of evidence supporting the claim) but I do not know if there is a god.