How to archive or delete Posts here ?

[Louloulou]

Hello
How can I archive a post here, or edit a post ?
Also, how do I delete a post.
When I search my Usernam on Google I can find a post I wrote here. I don't want that.
This website lacks ergonomy...
I can find no info on how to do it, and there is no button...
I'm on Desktop PC.
Thank you 🙂