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No. NO. You can't even change language shortcut from default (Win + Space). As I understand this comes from MacOS, which gnome devs brainlessly copy. https://askubuntu.com/questions/41480/how-do-i-change-my-key...
Your example is dead wrong. I run Gnome and my language shortcut is CapsLock. I used the Tweaks configuration software which is part of Gnome (it is the one you are supposed to use for more invasive configuration). I do find Gnome plenty configurable. You just need to go in order of Settings -> Tweaks -> their weird registry -> custom extensions. I would agree this is convoluted, but I do not mind it (as a power user…
> I find gnome to be pretty configurable. The opinionated defaults aren’t so bad because you can just replace the environment if you dislike it
IT'S NOT CONFIGURABLE. You can hack your way around their "opinionated defaults" which are for MacOS user from USA.
Take a look at the KDE's settings for this case https://i.stack.imgur.com/ukKmp.png
There is no reason to google, install some tool and mess with it.