not much to say does not start crashes continuously - DONT WORK
you'll need to wait for an update because while "The latest versions of most Creative Cloud apps are compatible with Big Sur but have these known issues. Adobe Acrobat and Adobe Animate are not yet compatible. "
Same here constantly crashing on startup on Big Sur. Uninstall the new version and install the old (precvious) version did the trick for me.
Same problem 😞
then same answer, wait for an update or install previous verions of animate or your os.