What is wrong with this simple node setup using textures from Poliigon? I downloaded and tried this free material from Poliigon but I am unable to create it correctly.
This is the desired reflection/ result:

This is my node setup:

This is the current result:

Which nodes here are wrong? I know maybe its about the invert node but removing that gave me minimal reflection, like a diffuse material. (The Gloss map is very whitish, So I thought I'll have to invert that. I've done it before many times using different texture sources)
And also, How do you use the reflection node?
You're using the normal map as if it was a displacement map. You have to put it through a normal map node first and then into the normal input of your diffuse shader. And inverting the gloss is actually right.

Refer to this: How to add a normal map texture and a diffuse texture on a model in cycles?.