Your paid advertising reports (Facebook Ads, Google Ads, etc.) are generated with account level data by default.
To select a specific campaign for the report, follow the steps here.
1. Click on the data source to open the settings menu:
2. Hover over the three dots next to your source and select 'edit source':
3. Under 'filter data by', select 'campaign':
4. Pick your campaign from the drop down list and click on 'Update source'.
Your report data will be filtered now to show performance numbers for your selected campaign.