Edit: for some reason, the gif file doesn't work, so you need to click on the drive link
https://drive.google.com/file/d/1NTa76u-fYupelzUUzKGfT7CLhyiYS7LN/view?usp=sharing
After trying to find a way to make the animations more immersive, I finally decided to go back to my original workflow, because its impossible to do it in 2D animations. But I found out that animating in 180° fisheye is much easier to animate in TVPaint because animating with PanoPainter is just a pain in the ass (has tons of bugs and its latest version is from 2019 I think).
Since its 180°, I make sure (well I hope so^^) that you still can enjoy it.
For the current animation, I think I can make it done in this or next week. So stay tuned :)
Again, I apologize for my late update >_<