<iframe width="425" height="350" src="https://www.youtube.com/embed/Gs65TB89CGw" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

This is the embedding code used by Synthzone. Maybe there is something not up-to-date about this way of embedding it, in a way Windows Edge gets along with it, but Apple systems don't; so you could present the code to a specialist forum...