Low Attribution issue in Meta After Using CAPIG

Hey There,
My CAPIG setup is done.

And data routing setup is also done.

Still, attribution is lower than actual sales.
Avg-CPA-Sheet-OCMâ„¢-Google-Sheets

How to fix This?

Attribution works entirely within the settings you use in your ad campaigns. You can only influence attribution to make sure that you always pass the click id when it is available.

How do you determine the actual attribution to compare with the results in Meta?