Animation/CrossFade difficulties, Animation won't CrossFade

Hello, I'm new to C# and still learning how to use the language. I'm making an fps and having problems with animations run, walk, and idle. When I walk forward, the walk animation CrossFades nicely from the idle animation and the walk animation CrossFades nicely when going into the idle animation also. But when I hit the "Shift" key to run, it doesn't crossfade at all. It just plays just like Animation.Play would. I'm not sure how to fix this. Any help would be greatly appreciated!

Here's my animation code:

 public void AnimationController() {
         
         if(WasStanding && !CharCont.isGrounded)
         {
             WasStanding = false;
             JumpAnimationHolder.animation.Play("JumpAnimation");
         }
         else if(!WasStanding && CharCont.isGrounded)
         {
             WasStanding = true;
             JumpAnimationHolder.animation.Play("LandAnimation");
         }
         
         if(walkingstate == WalkingState.Running)
         {    
             WalkAnimationHolder.animation["RunAnimation"].speed = VelocityMagnitude / RunSpeed * 1.2f;
             WalkAnimationHolder.animation.CrossFade("RunAnimation", 0.2f);
         }
         else if(walkingstate == WalkingState.Walking)
         {
             WalkAnimationHolder.animation["RunAnimation"].speed = VelocityMagnitude / WalkSpeed * 1.2f;
             WalkAnimationHolder.animation.CrossFade("WalkAnimation", 0.2f);
         }
         else
         {
             WalkAnimationHolder.animation.CrossFade("IdleAnimation", 0.2f);
         }
     }