Design legs and arms for the characters -- game Unity 3D

I have a game with the character shown in the picture. I need to recode so that the character's arms and legs can work elastically like in the video. My game is using Rope Obi but it doesn't seem to work well, you can redo it with another library if needed. I need to process it in short time with max budget of $100. Please bid if you can with this budget.