In a German forum a member posted a good way to make 360° panoramas:
360° panoramas with Anafi
He uses the 2 PC programs Microsoft ICE (Image Composite Editor) and Hugin.
Perhaps you can use google translate to read the German text.
I make my own 360's and tried to get the two photos looking up to line up. First time PanoramaStudio 3 Pro rejected to the two top photos. Second time I tried I got them in and the sky looked great but one spot on the ground did not line up anymore. I like making them but just kind of gave up on the idea of using upward looking photos.
8 sets @-45° and 8 sets @ 0° and 8sets @ +45° should work out OK.
Mine turn out OK but I want to try and get rid of the funnel affect looking up. Parrot Anafi