macos – Open all applications in full screen always

There are many discussions on how to open Applications in full screen in Mac, like https://osxdaily.com/2018/05/15/make-apps-open-full-screen-mac-automatically/

But, still there are many stubborn applications which fail to open full screen with above approach. One such application, which I found is, is Foxit PDF reader.

Is there any command line approach to force such individual applications to open full screen? Alternatively, is there any way to force ALL applications to open in full screen in Mac?

I am using macOS Bigsur.

Thanks for your valuable advice.