Disable ‘attachment’ posts without remove the Medias

Hi All,

I need some help… I hate that ‘attachment’ page is created for each image of my gallery in my posts !
For exemple, this post : https://www.riversatile.fr/2010/04/18/lost-saison-6-photos-promotionnelles-episode-14
It contains 1 gallery, but for each image in the gallery, I notice there is 1 ‘attachment’ post by image !!! See here : https://www.riversatile.fr/2010/04/18/lost-saison-6-photos-promotionnelles-episode-14/promo-lost-S06E14_06/

I understood that WordPress create himself a new post for each media added into the Media Library, but here my question (I have not found any similar topic/solution) :

How can I disable ‘attachment’ posts (for each image/media) without remove/empty the WordPress Media Library ???

Thanks for your support ??