🛠 Refactor Normalization

[ashwinvaidya17]

Description

• Use a single placeholder for normalization metrics

Changes

• [x] Refactor (non-breaking change which refactors the code base)

Checklist

• [x] My code follows the pre-commit style and check guidelines of this project.
• [x] I have performed a self-review of my code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing tests pass locally with my changes