How to get started with metaphysics

Hi! So I have a pretty good start in philosophy (read a little bit of Sartre, the republic by Plato, a big chunk of the politics by Aristotle and some st-augustin, the first meditation of Descartes and a whole lot of nieztche)

But lately, I’ve been fascinated with the concept of nothingness and time. So I’m wondering where to start? I’d love to read being and time but is it too advance or do you think I could tackle it? Or does he reference too much older work that I should have read?

Also, does any philosopher extensively talks about time? The idea that time is indépendant from both our bodies and our world but it literally is what is making it is crazy (don’t know if making sense) anyway, thanks!

(English is not my main languages so sorry for any mistakes)