"Nothing" can be a slippery concept. See for example Robert Lawrence Kuhn's nine levels/types of nothing:

* https://closertotruth.com/news/levels-of-nothing-by-robert-l...

Also various physicists:

* https://blogs.scientificamerican.com/observations/physicists...

The general field of the study of being:

* https://en.wikipedia.org/wiki/Ontology