Limitations of Microsoft 365 Copilot for Excel workflows?

I've been exploring Microsoft 365 Copilot for Excel workflows recently.

It works well for simple queries, but I still find it limited when dealing with:

- messy data cleaning

- converting images/PDFs into structured tables

- more complex data transformations

Curious how others are using Copilot for these scenarios?

Are you relying purely on Copilot, or combining it with other tools/workflows?