Well, my experience says that there is no "best" setting in any network and everything comes through trial and error. If I were you and just started my journey in CPA, I would not go with OGads. It's a very good and reliable network but not for starting in my opinion. Also, SOI sweepstakes offers are better choices compared to CPI and PIN since they require less action from the user.
About the networks, I would recommend the following ones since they have more SOI offers and are more beginner friendly:
https://gg.agency/
https://mylead.global/en
http://www.cpagrip.com/
https://www.mobidea.com/
Also, it's important to consider which traffic sources you are working with because some traffic sources send many bot sand low quality traffic to your campaigns.
