Why did my mesh disappeared? I'm a begginer in blender, so please forgive me if the question looks silly to you!

Almost all the objects in my scene disappeared (except 2) as if I deleted them by mistake. The thing is all the objects are still listed in the right side graph. The all have the eye button activated, but yet nothing is visible anymore! As I don't have a backup file, I simply can't find any tricks to fix this...

Thank you for you help!
You have entered into the local view by mistake pressing Numpad / key (slash). Press Numpad / again to exit Local view.