Why do my graphs look like this

Here's a good tutorial on using the Speed Graph Editor - 

Unfortunately, it doesn't go in-depth nor cover different property types but it provides a decent beginner's foundation. And this Youtube Channel has some good Creative Uses of After Effects.

That's the VALUE Graph Editor. If it was a Speed Graph, you would see the px/sec suffix for the numbers in the Vertical Axis.

As a general rule, if you're not creating character animations or complex animations, it's best to use the Speed Graph as they SHOULD BE more easily understood and controlled for Motion Design type of work - essentially moving/animating from Point/Value A to Point/Value B. 

HTH

I agree with @nishu_kush that everything looks normal here. Here's a School of Motion tutorial giving a solid introduction to the Graph Editor: https://www.schoolofmotion.com/blog/intro-to-the-graph-editor-in-after-effects

The Speed Graph and Value Graph are both incredibly powerful and equally useful when crafting animation.

We also have introduction to After Effects course on our new Adobe Video Training platform: https://adobevideotraining.com/after-effects/introductory-courses/

Thanks,
- David, After Effects Engineering Team

Here's the best workflow for accurately creating a motion path and adjusting the timing from my Quick Tips series:

Thanks for writing in, lig_4250.

It looks good to me. How do you want it to look? Can you share any reference? Right now, you're working with the Speed Graph. You can try switching to the Value Graph (please refer to the screenshot.)