Web App Alternative on OpenSuse - feddit.org

I recently switched to OpenSuse Slowroll on my desktop, while my laptop is still running Mint. What I really miss is the Web App Manager on Linux Mint that allows you to install websites as an app on the desktop. I liked to use it especially for streaming services, because I usually clear all browser data, when I close it. So the Web App was a good option to have a single site with permanent cookies to avoid logging in after ever restart. And having this separated from the normal browser was also nice. So I wonder, if there is a similar option for OpenSuse or some other workaround I am missing.