I want a more readable text
What font size do you use? The recommended font size is 10pt to 12pt for continuous text.
The default settings for Writer are in Tools > Options > LO Writer > Basic Fonts. Or you change the setting in the paragraph style “Default style” in Tab “Font”. Changing in the default style works in Calc, Draw, and Impress too.
You can use increase/decrease buttons in the toolbar or the side bar, or font size item from the context menu or the drop-down list, for to change font size for single places.
If the fonts have the recommended font size, but you still cannot read them, then you might want to look at the texts with a higher zoom, or -when the menus are to small too- you can set LibreOffice to use a higher scaling for the UI in Tools > Options > LibreOffice > View.
i want less words per page…
So my paragraphs two and three are the apposite answer. See the Writer guide, how to do the suggested changes.