How do you make a circular player?

I’m new to Unity. How do you make a circular player that you can apply a 2D Circle Collider to ? I know I can use the default circle sprite, but there’s a reason I don’t want to do this. I tried getting circle images with transparent backgrounds, but this doesn’t seem to work.

Here’s a video showing my desired outcome: HOW TO MAKE A DASH MOVE IN UNITY - EASY TUTORIAL - YouTube.

Thank you

I’m sure there are many png circles on google, but if you can’t get them, you can try make one with photoshop, if you don’t want to get it, you can even use paint!

For 2D, Sprites are the base objects. This was the only way I found to get a Circle.