> I somehow changed the toolbar into a single big column instead of several
> small ones and i would like to change it back because I cannot scroll down
> to other tools not shown (I know i can go up to the tabs, but this slows me
> down considerably)
Your toolbox is too narrow - you can make it wider to see several
columns of tools by grabbing its border and dragging it.
If you do not want to make it wider, but do not need all tools, you can
disbale those you do not need in Edit -> Preferences.
(saw your image attachment in the moderation queue; the list drops
attachments for security and size reasons)