PS4 pro DVD only works vertical? why?

I bought a ps4 pro but when I put it vertical, the ps4 pro will read it. I would like to know what is the cause? Apparently the laser works. For many people this has also been the solution but I want to fix it; suppose I’m going to sell it

there is no movie from tronicsfix that explains this while it is a solution for many people but not with a repair fix

Here’s a description from youtube (another person) ; same sound en same solution

PS4 PS4 PRO Unrecognizable disk read error quick 1 second fix