Completely agree with @Jennifer_Dungan
Other related discussions are here:
https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/data-discrepancies-between-facebook-ad-adobe-analytics-reports/m-p/247782https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/h...
@jchabot86 Please feel free to mark my answer as correct if it helps. Else, kindly share your follow up queries on this thread, I will be happy to assist.
Thank you