you are better off moving the icons from the right sidebar (long press on icon of backlinks, outlinks, tags and outline) and drag them individually – carefully – over to the spaces between icons on the left sidebar and then when all done, close right sidebar
you’ll need to extend the left sidebar in the process by hovering the cursor over the right edge of the left sidebar and drag it right to have space to accommodate the transferred icons
before you do all this, you can use the core workspaces plugin and save your default workspace
and when done with the changes, again, save the workspace a different name
you can also have sections in sidebars: so when you drag a new icon or even a note to the bottom left side of the left toolbar, you will be given a new section again with a line where further icons can be drawn
you can do this on the right sidebar as well and populate various sections so have readily available information (of file properties, recent files, etc.) without having to click on icons to switch pane views
while you experiment, save your workspaces and load them up if you made some mistake
keep your most usable workspaces in the end
you can also make duplicates of search panels, etc. using the hover editor external plugin as someone suggested somewhere…