It's pretty hard to answer this without knowing why it's crashing / not starting. Like, the boring answer it either "buy a VM somewhere and install the databas

It's pretty hard to answer this without knowing why it's crashing / not starting. Like, the boring answer it either "buy a VM somewhere and install the database there" or "buy DBaaS from one of the many companies that sell them", but there's no telling whether that will improve things until you dig into what's failing now. From your edit, it sounds like you've been "told" some stuff, and you seem to be referencing an error message without providing it. I'd suggest you head over to the docs or StackOverflow.