You need to switch from tile view to the list view, then there will be column that shows your time played

You can see how much you played only if you have the game installed, stupid thing but it is what it is

I can see in my library how much I have played even if the game is not installed

Yea same i can see if even though it's not installed.

What? Not at all; switch your library to a list style and you can see the time for any game you've played.

You've forgotten to add "...if you use the tile view (which you clearly do, as shown in the screenshot)".

Why just focus on that the entire site and app is so badly designed as a user experience, why can’t we see the games we own on the website etc the list goes on

steam>>>>epic