Help in acheiving modern day 3D cartoon-like looks
 

Hello everyone,
I don't know if crtoon-like should be description for it but,
I’ve tried to achieve modern day 3D animation textures and color grading but, my characters and (most importantly) my environment doesn’t come out looking BRIGHT, VIBRANT, AND COLORFUL like others’. Rather it comes out looking like a bad attempt at creating realistic textures.
Below is an example of my edited renders VS how I would want it to look. I know I’m nowhere close to comparing my work with frozen or Zootopia but, just for people to get what I’m driving at. I need help in detecting where the secret is. Is it in texturing, rendering or post-production.

Thanks in advance

looks really cool )) i like it

IKR... that's why I wanna know how to make it