Problem with child theme

I have one more question I have uploaded six themes: Orfeo, Fagri, Hestia, Twenty Fifteen, Twenty Seventeen and Twenty Sixteen. There is a problem when you try to add a child theme. I acted according to the guidelines of this film – https://www.youtube.com/watch?v=HrkyieFkk4g&t=152s namely, there are only four themes (the latter) that I can thank for creating a child theme. The first two or Orfeo and Fagri do not appear. When I click on one of these themes (these two) a message appears – “This is a child theme of Hestia.” but even if I add a child theme, the layout is slightly different from the appearance of the original Orfeo.