Photos in Lightroom gallery lose color after being shot

Hello, so I'm pretty new at this, I'm trying to take basic photos in Lightroom to begin learning and I have this issue:

For a reason I yet don't know, in the camera all colors look vivid and all, but when I take a shot and look at it in the gallery it looks grayish less coloured and bad even the camera preview looks better 

Here goes some screenshots 

That's the camera view

Thats the camera preview 

This is both gallery, and exported to the phone photo. 

This really pisses me off since I bought a brand new phone with a cool camera and I can't find a fix for this simple issue.

Any help would be appreciated.

Thanks!