The Menu Bar (from File to Help, plus the blank space) is an element that
does not seem to be modifiable.
The Toolbar, though, with all the icons on it, is very crowded and can be
made double width to accommodate the many icons on it:
Point with your mouse at the horizontal border line separating the Toolbar
and the Taskbar. You will not see a double arrow. Click the left mouse
button and drag downwards, and you should get a double-wide Toolbar.
At this point, review the icons available to you. If there are some, like
the paragraph symbol, Drawing, Paste, Outside Border, etc. that you never
use or else you implement them by other means, you might find enough useless
icons that you want to do some housecleaning:
Click the little triangle arrow at the right end of one of your toolbars.
Click Add or Remove icons.
Edit your icon choices on the drop-down list.
If you thin out the icons enough, you can then go back to a single width
Toolbar.
Point at the border between the two Toolbars, and drag upwards.