i mean just look at Twitter - one wide main column in the center - two narrow on the sides, symmetrically

also note ( important ) on X you don't have to scroll the left side column to get to the end of it - on noStrudel you do

you can either nest the menus so that it doesn't require scrolling ( what X does ) or you can split half of them off and move to the right side since you're not showing "trends" or follow recommendations and so have that space on the right ...