Do you guys actually use Excel's native "Trace Dependents" for massive files, or is it just an obscure relic?

I recently inherited a messy spreadsheet nightmare from another department, and naturally, it's riddled with obsolete links and #REF! errors.

I've been trying to map out the logic using the native Ctrl + ] (Trace Dependents/Precedents) tool, but I find the experience terrible. Once the dependencies become complex, the entire sheet just looks like it's covered in an ugly blue spider web , making it basically impossible to see the actual structure.

How do you all handle cleaning up and organizing complicated, undocumented spreadsheets efficiently? Are there any specific workflows, scripts, or open-source visualizers you use to actually map the data flow? Doing this manually cell-by-cell is driving me insane.