What are some alternatives?
When comparing Adobe Animate and TVPaint Animation, you can also consider the following products
OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
Synfig Studio - Just another WordPress site
Toon Boom Harmony - Production-ready animation software for every artist, in any style.
Pencil2D - Pencil2D is an opensource animation/drawing software for Mac OS X, Windows, and Linux, based on old...
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Unity - The multiplatform game creation tools for everyone.