I didn't press anything on my laptop (Hp) on purpose, and now my keyboard in Outlook is only typing very small. With Google or everything else, it just doesn't write normally in Outlook, I've already tried everything possible, but I seem to have changed something.
Create a new email.
When writing, press and hold the CTRL key and use the mouse scroll wheel. Now you should be able to set the font size.
Release the scroll wheel as soon as the font is the right size.