Hello, when will we be able to create our own categories and the possibility of adding info (games finished, games in progress, on which machine, etc ...) and a wish list ??? thank you in advance

You can already do that by using tags and filters.
You can then pin the results to the left panel as a bookmark and have as many categories or collections as you want. You can also rename the pinned bookmark to your liking by right-clicking it.

Thanks for your reply, so no easier way to do it yet, hoping for these additions in a future update ...

Bonjour il n'est toujours pas possible d'avoir mieux comme sur steam par exemple??