[![enter image description here](https://i.stack.imgur.com/LbalV.png)](https://i.stack.imgur.com/LbalV.png)

I am making a robot for my college project. For now, the robot simply has to move forward, reverse, right and left. While the forward and reverse thing is very smooth but while taking a turn it wobbles continuously. I tried to add weight and slow down the speed but the vibration is still there. I need to know what I am doing wrong. Attaching the youtube links of the wobbling robot.

* [Wobbling robot during turning](https://youtu.be/3OqJjJY1anA)
* [Smooth movement in the forward direction](https://youtu.be/GlL9NN1W6ns)