I make the Navigator (shows outline) a separate window and also undock the Sidebar tool set and set it to Styles & Formatting (Quick set styles). All Rulers and toolbars in edit window are off.
Custom dictionaries per series or book. Also I remove alternate correct spelling I don't use from the main dictionary, because any document should for example have nosy or nosey, but not both.
LO Writer (undocked tools) & KATE on a 4K screen. Even a 1366 x 768 will work.
There is no need for Scrivener or Vellum if you master LO styles, outline navigation, PDF export and Save As docx for Calibre (there is also a Sigil plugin for docx if you are creating textbooks etc, but the docx to Calibre epub2 perfectly maps styles to CSS, headings, links etc. Then make other non-PDF from epub2, inc epub3 if you need it, or edit in in Sigil).
I've tried Scrivener and seen the ebooks Velum makes!
I guess I've used most wordprocessors on CP/M, DOS, Windows (NT and other) and Linux. Hardly used a Mac since OS9!
I build timelines in a spreadsheet and copy/paste as text.
A separate spreadsheet tracks document / project status.
I used Notepad++ in Windows, then WINE for import of annotations, events, places, characters, plot outline or whatever as it's tabbed. I switched to KATE on Linux as it's similar but native.
See
https://www.cleverfiles.com/howto/notepad-mac.html
https://notepad-plus-plus.org/
Perhaps KATE can work on Mac?
https://ports.macports.org/port/kate/
I've used spreadsheets for tracking projects for 40 years. Only massive projects need Project Management tools/SW. People manage projects, the SW only documents and shows schedule conflicts.
I don't use LO Calc as spreadsheet for the writing related projects purely to avoid it in the MRU doc list, but others might prefer it.
I did use MS Word and MS Excel for over 20 years.