Mixamo

[#1]

Hello! Please tell me how I can create my own animation for your character, thank you very much!

[#2]

You need to go here for Mixamo help https://www.mixamo.com/#/

[#3]

you just choose the desired character, put them in T-Pose (X Out Any Animation Already on the character) and then hit the download button, you will be able to save as FBX or DAE (Collada). once downloaded, just import the model into whatever animation software you use, and BAM! You should be able to animate the character from there. (I would know, i did it with the Y-Bot once.)