Unable to embed my videos?

Hello,

I want to display my personal videos (therefore imported from my local disk in .mp4 format) in the form of a grid but when I’m in the block editor (Gutenberg), and select this plug-in, on the side, when I click on the “Add media” button (it only takes images and not videos… :-(( ) it adds the images well (a counter is incremented) and presents them in 3 columns (choice made at the start) but impossible to do the same for my videos…(or there is a manipulation that I am doing wrong)?? .

In addition, I struggle for several days with this problem even trying with other plug-ins (All-in-One-Video, Gallery, ..) I have the same problem !!! (It never takes the video format when it is expected if I understood correctly…)

Rem: to display my photos (images) this time in a grid, I used Photo Gallery and it worked perfectly (Very easy to use), I don’t understand why he doesn’t use this (simple) method for videos??? Thank you so much :!!! :-))