Dem0, good afternoon and thanks for the comment. Integration of TrueVirtualTours with Google StreetView is scheduled for next year, tentatively in March. It is planned to implement the publication of both individual panoramas and virtual tours united by transitions.

As for transitions between panoramas of a virtual tour in TrueVirtualTours, you can see this article: https://truevirtualtours.com/en/article/hotspots-or-tunnels-between-panoramas-in-the-360-degree-tour

((I thought it was over, haha))
Could you, if not difficult (and if you know how), tell me how to create transitions between panoramas in Google StreetView.
In earlier versions of the StreetView app, it was possible to combine multiple panoramas with transitions (like pano2vr tours, for example). Today I finally posted my photos from 28.11. (that's when I was fixing the horizon), but the updated version of StreetView on android no longer has the function of adding a transition. Likewise with the desktop version, the browser also does not have this option anymore.

Great, thanks anyway for your comment +1

Funnily enough, I've already figured out my problem.
Affinity Photo is really handy for fixing crooked horizons.
Anyway, thanks for paying attention to my question!