I believe everyone is a spiritual person, as it is an integral human aspect. What people chose to do with that and how to find meaning, or get by day to day, is up to them.
I suppose it also depends on how you define an atheist really.
If you accept there may be universal laws which science doesn’t understand, may be linked to morality, or there is some meaning to life, does that make you an atheist? I’m not sure tbh.
I suppose it simply depends on how you define yourself. Nobody else should tell you what you can and can’t believe imho. The boxes we sometimes try and fit into are less important than how we get there, and our onward journey through life.
Have fun figuring it out, there’s no bigger puzzle!