Save Ps4 video clip not working?

When I press the Share button I find no button for save video clip. Only save screenshot exists.

And when it is there, it is locked and can only be executed after a while.

And if that works, I'll only do 4 seconds again. Clips as if I were somehow interrupting them. What am I doing wrong?

Quite simply: It takes a few seconds, sometimes longer, for the button to be ready to be pressed. Then it is also saved. If you are impatient and break in front of it and press again, only the clip between the 2x presses is saved.