If you are unable to see data for failed jobs or if there is a mismatch between the failed jobs data in the SQL performance monitor and the SQL insight monitor, check if you have granted the necessary permission.
Data in the SQL performance monitor:

Data in the SQL insight monitor:

If the SELECT permission is not given, you will not be able to get the details of the jobs, and you might get the following error in your agent log file:
The SELECT permission was denied on the object 'sysjobsteps', database 'msdb', schema 'dbo'.
Command:
Use the below command to provide the necessary permission:
use msdb;
GRANT SELECT TO "NT AUTHORITY\SYSTEM";
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