You 100% do not need a Wacom if you cant afford it. Huion has much better value alternatives that are just as good.
If all you want it for is youtube animations then have you thought about trying MOHO Animation? Then you don't need a tab at all and it is 1000000 times faster to make excellent looking animations.
I have tried Flash, Toom Boom Harmony and Moho one by one previously. But I didn't Moho or Toom Boom suitable, if I want to do Bone animation then I will prefer 3D aniamtion rather than using Moho. I love Adobe Flash (animate CC) hand drawn aniamtion just like Japanese anime style.