Recommendations for Excel Courses

I'm currently an undergraduate student and use Excel on a regular basis. As I've taken up personal projects alongside routine class work, I feel like I've discovered a knack for Excel. That being said, I recognize I'm only a student and lack the real-world application that industry professionals would otherwise have.

I've come across numerous Excel "courses" that advertise skill development. I've always been skeptical of spending money to learn Excel, especially with LLMs around nowadays. But I wanted to send out a bat signal in case anyone has had an exceptional experience with an Excel training program that they feel is worth sharing.

Would also appreciate any other resources (YouTube channels, forums, websites, etc...) that serve similar purposes. Just trying to enhance my current skillset in hopes of landing a job and making money at some point.