Materialism

Reality is made up of matter. The Universe of matter is everything that is, nothing exists outside of it, be it a supernatural being or consciousness.
The principles of logic and time can be said to exist outside the material universe, but that is only because these are inevitable principles of reality, not immaterial beings.
See Materialism on Wikipedia.
Mind Over Matter
Dualism asserts that the subjective experience of consciousness is often believed to exist outside of the material plane. However, since it is simply a by-product of neural processes in the brain, and it does not have any downward causality that would lead to free will, it should not be seen as conflicting with a purely materialist view of reality.
Emergent dualism distinguishes between physical matter and the mind that emerges at sufficient levels of complexity, but similar to the practical definition of free will, this definition simply describes different modalities in the behavior of matter, rather than a non-material agent.
Interpreting the Spiritual as Material
Spiritual terminology is often used to reference and elicit mental states. These should always be interpreted as allegories for processes within the material universe and their emergent consciousness by-products, rather than literal descriptions of things that somehow exist outside of the universe. This allows you to interface with rituals and other practices that have evolved over centuries to produce higher emotional states, reduce suffering, create in-group bonds, and other benefits, without reliance on any supernatural belief structures that bypass reason and are not subject to scientific inquiry.
Spirit is Emergence
Spiritual terminology and dualistic philosophies are historically employed to describe phenomenon that we now know as emergent. It is how we traditionally describe the holistic behavior of the brain, societies, and the universe. Until the emergence of the concept of emergence, it was not possible to describe the aggregate behavior of complex systems using scientific language.
This is why there is so much excitement over fractals and complexity among those who discover these concepts. It bridges the gap between the spiritual and the material, allowing us to finally have robust and meaningful conversations about the nature of mind, consciousness, and the universe without invoking unprovable, non-material agents.
What If You Just Really Like Stuff?
In that case you are materialistic.
You can find many other examples of materialistic thought on social media and YouTube. But these videos are about materialism.