which, BTW you need to search in internet which they are because the company doing the software did not bother to make them accessible in a help menu
At least on macOS and Windows the shortcuts are shown in the (traditional) menu bar. With GNOME's use of hamburgers, it's anyone's guess. As someone who likes shortcuts, I found it very hard to figure out shortcuts in GNOME apps that have a lot of functionality hidden away. (Aside from keyboard shortcuts not being very consistent between apps on Linux.)
In Excel 365 pressing ALT shows the shortcut key in the ribbon ( if enabled in options). The issue is that the ribbon looks now like google maps. In Edge pressing ALT sets the focus to the "...". What to do next is left as an exercise for the reader. In Teams, pressing ALT does nothing and the Help button has only "Themes", "News" and "Training" .
This is true when you use only an editor and a debugger. When you need to use 10 programs each with its own keyboard shorcuts (which, BTW you need to search in internet which they are because the company doing the software did not bother to make them accessible in a help menu) you're gonna have a hard time. In the (1985) past you had for such things a holder attached to your keyboard where you had a listing of those keyboard shortcuts. Now the world has evolved and we have ... tada... the hamburger menu. P.S. I would not feel good as a developer to know that someone , somewhere curses me and my family constantly for the work i done.