Can you avoid using your legal name on applications to avoid admissions bias?

Let’s say there’s a real chance of bias against you due to your racial/religious/sexual background. can you do this, and why isn’t this normal?

The only way around it would be to legally change your name.

MODERATOR’S NOTE:
@TomSrOfBoston is correct. For this reason, and because the OP has started multiple threads which are variation of a theme, I’m closing.