Can't you just bookmark the pages in your browser and drag and drop it to the desktop? 

 Drag and drop from where? The address bar?  

 i think it depends on the desktop manager (gnome, kde, cinnamon, xfce, etc) a little

possibly it can be wrapped up in ".desktop" files, i'm not sure how you abstract the "open in my favourite web browser" but certainly for example editors have an environment variable... i think maybe there is some XDG open command you can use that will just use the preferred browser on whatever URL you feed it

these will live in ~/.config/share/applications/

here's mine (i have steam installed, and a few others

https://cdn.satellite.earth/bc0ca8d96b670d436c9a84ed0e47eaca0f927a52385a6c5798b82416850f0a3b.png

and an example of one of the steam launcher .desktop files:

https://cdn.satellite.earth/6fd322feb66db38ebeda6198942fd3c069193b0bac8009979cd4ad7174c1744b.png 

 Figured out chromium based browsers will do any page as an "app" with
Hamburger > save and share > install page as app 

 Yes...  But use Brave Browser. Chrome spys on you, collects your personal data and sells it. Plus Google analyzes your data to figure out how feed you curated manipulative data.  

 Brave is chromium based.