What type of soil to fill holes in a yard?

Hello, I'm curious about the best type of soil to fill holes in my yard. I've noticed that some areas have sunk in or have become uneven over time, and I'd like to level them out. What kind of soil should I use for this purpose? Is there a specific type of soil that's better suited for filling holes in a yard, or is it okay to use a general-purpose soil mix? I'd appreciate any advice you can offer on this matter. Thank you!