You can use “pg up” and “pg dn” to scroll. That’s what I use and it also helps that my laptop has a touchscreen so I have no complaints about scrolling around my work in LibreOffice

you can get a dedicated PDF viewer. I use my system PDF viewer and it works better than Adobe PDF I have been using for ages. This one actually makes reading PDFs bearable in the dark

Good. Those that want it can enable it. I don’t. Takes up too much screen space showing a lot of unnecessary icons

I honestly prefer the classic LibreOffice UI. The ribbon thing takes up a lot of screen space and i really didn’t like it when it debuted in Office 2007. Then microsoft made the color a fancy bluish hue so it could be more fancy. LibreOffice is the best

that’s why you should use LibreOffice