Our company, Many Tricks, makes an app called Butler that lets you do abbreviation-based web searches. Type "gm Tokyo" into Butler's input box, and it runs a search for Tokyo on Google Maps. There's also a Safari extension, SafariKeywordSearch, that does the same thing, though only from within Safari.
I decided to recreate this functionality in Keyboard Maestro, but with the added ability to optionally specify a browser to use for the search—if left unspecified, it uses the default browser:
The version on the left would use your default browser to search Apple's movies for those using the keyword disaster; the version on the right would do the same, but using the Edge browser.
I included a number of shortcuts, as seen in this image, but it's very easy to remove any of those, and relatively easy to add your own. There's also an in-app help screen you can display to help remember the shortcuts (and browsers) it supports.
There's more detail in this blog post: https://robservatory.com/search-sites-from-anywhere-via-abbreviations/
The macro is attached here—as usual, it's disabled, so enable then try it. It's working well for me; if others do try, please let me know if you have any issues with it.
Jan 25 2022: 2.7 is out (see post below)
Jan 25 2022: 2.6 is out
Jan 15 2022: 2.5 is out
Jan 14 2022: 2.4 is out
Jan 9 2022: 2.3 is out
Jan 4 2022: 2.2 is out
Jan 2 2022: 2.1 is out
Dec 29 2021: 2.0 is out