Religion is not simply about deities and the worship thereof.
At a basic level, ‘religion’ is about belief, explanation, seeking deeper meaning, understanding origins, spiritual connection and the resulting allegiance, trust and sacrifice that spring from those things.
Sometimes the object of religious belief is a god, sometimes it is a person, sometimes an ideology.
Everyone is religious. Especially those who seek to compartmentalise the idea of religion around those who happen to worship a personal deity.
You know who you are. Game’s up.