Displaying video html on safari, ios?

Question

iOS

Good afternoon!
Thanks in advance for your replies.
Video plays fine on all browsers except safari
How can I display autoplay video on safari, ios?
Also, some blocks are clumsily displayed, how can they be corrected? Flexbox to use?
It is desirable to be simpler, I'm still a beginner, I just started my journey)
Site: www.dep.ho.ua
=== webp
doesn't work
, tried it, doesn't display, just an empty block