Facebook Ads Cpa marketing tracking?

Hey, I'm curious if anyone has a background on facebook ads and affiliate marketing (cpa marketing).

I'm starting to run campaigns today. I'm curious about how tracking works.

1. Will the facebook pixel track conversions, age, gender, device,etc?

2. Should I use a 3rd party tracking software to track this data?

Or is it best to use both? Does anyone have experience?

Appreciate any help, thank you.

 

1. Yes
2. Google Analytics is the most common

 

Thanks for response.
Why use 3rd party tracker for fb if pixel does all the tracking?
What is the pixel missing?

 

Because Facebook pixel tracks only specific info, GA collects broader data.