(Update: this time, I put my hands on WPS Office which is identical to MicroSoft Office and found no page/paragraph/*** styles - wow, I cannot imagine how students wrote their academic articles with tool like this. One reason libreoffice get messed-up document to fix …)
Although it is a common issue, there is never enough hands to actually work on conversion guide for existing files.
I do think, formatting messed up like yours do not matter much.
Line Spacing is part of style (F11 call the menu)
Fonts change would be identical, please check if you have the required fonts installed.
USE style, indent and paragraph instead line break and space, in both MS Office and LibreOffice.