I have managed to set page numbers to by document, but not with variations, such as not on the title page or TOC, changing number style non-text pages to lower case Roman numerals, etc.
Also, what I would like to do is to set Left-hand page headers to show the book title, while right-hand pages show Chapter headings, all with some sort of separator (dash, |, bullet?) between the page number and the title/heading. That is, to the right on left pages and to the left on right pages.
This is handled by separated your document into several “parts”, each one controlled by a specific page style.
Considering the general nature of your question (not specifically targeting on a detail), I recommend you first read the chapter about page styles in the Writer Guide. Then come back on points where you fail.
When asking here, always mention OS name, exact LO version and save format. In particular, if you save DOCX, no luck because page styles don’t exist in DOCX. There is a very different feature to do the same but the conversion to-from DOCX will create an unmanageable mess in your document.