Facebook Ads Performance Tracking Issue

I'm currently having an issue with tracking ad performance for my Facebook Business Manager. The specific problem is with the tracking metrics; I'm finding discrepancies, showing more results yet receiving fewer than expected.

This job will ideally suit you if:
- You have extensive experience with Facebook Business Manager.
- You understand in-depth the metrics used in tracking Facebook ad performance.
- You’re capable of identifying and resolving such anomalies.

Please note that your task will involve:
- Analysing the tracking metrics
- Identifying the cause of the discrepancies
- Implementing a solution to accurately reflect ad performance.

I need your help to fix these issues immediately to effectively manage my ad campaigns.