Hi Sumaira,
We can see who deleted the record through the audit logs.
First, make sure that auditing is enabled in your environment and the entity has auditing enabled.
Please refer to https://docs.microsoft.com/en-us/power-platform/admin/enable-use-comprehensive-auditing#enable-auditing
Then go to Advanced Settings > Auditing > Audit Summary View.
Enable/Disable Filters, then filter Event column to Delete.
Then filter the Entity column.
In this way, we can see all deleted logs of this entity, and the Changed By column is the user who deleted the record.
