I understand that you have not yet worked with the monetization of traffic.
See there are different types of traffic
• SEO / Doorways
• Social media traffic (targeted advertising, influencers);
• Native ads;
• Push notification;
• Email marketing;
• Popunder;
• And others
I advise you to get acquainted in detail with all types of traffic and understand that it will be easier for you to work.
To work on the CPA usually use native advertising, SMM, SEO. I advise you to learn more about those traffic sources.
Next, you should see what are the offers and verticals.
That is, it will be more interesting for you to work with it, and where you will be able to generate more leads.
Then you can register for several affiliate networks and their managers will suggest and advise what resources can be used in which offers