Where and How to create these 2D characters(See Pictures in Description) for 2D animations

Or is there a better way of creating 2D animations?

Please also give me some tutorial links for these.

You just have to draw them man… You can make them easier in a 3d program. Just create the character pose, take a picture. repeat the process. (If you are making a Human character, It’s really easy just use Makehuman! It’s a 3d program that you can pose characters in. I made a cruddy Wolf3d clone with characters from Makehuman!)