I suggest, as others do, to use the Extension Manager to disable Plugins you do not use often. For those that you do, I suggest organizing them in a way that makes sense to you and your workflow.
In my case I like to do the following:
In general I keep the SU Toolbars along the top and left side, with two exceptions. 1 The measurements toolbar, (I keep this at the lower left corner, reminiscent of AutoCAD command line location from back in the day)
2. I use Enscape on a daily basis, so I consider that as a core part of my workflow, so that is also located on top.
I place all other third party plugins toolbars along the bottom, and will periodically place the most used tools on the top line. As I notice I’m not using a plugin that has stayed towards the bottom, I will either disable it or uninstall it.
Note, these toolbars are great to have, but for commands you use often, either learning the standard or creating new shortcuts is in my opinion the fastest way to design. Windows → Preferences → Shortcuts
Once you’ve learned your core shortcuts, you may be able to hide the related toolbars giving you more view-port real-estate to work with less visual distractions.
A question for the community related to this: Back in the old days of me using AutoCAD, having memorized most of my shortcuts, I used to toggle on expert-mode, which allowed me to hide all menus and toolbar icons, giving me a full screen with no distractions. If there was a command I did not remember, I could simply toggle all the menu and toolbars back on, click on the command, then toggle it all off again to continue working. This creates a clean workspace similar to an old simple text editor program I like to use called Darkroom. I saw there used to be a plugin for that for SketchUp, but it has not been updated since ver 2017.
https://extensions.sketchup.com/extension/e38f6e71-bbd5-48ce-b2a2-2d14a3bfbbe4/su-fullscreen
Is there a built in way in SU or a new Plugin that lets you toggle Toolbars/Trays on and off and maximize the view-port screen?