Why can't I import animations?

I made this model in Blender and when I imported it into Unity, the animations didn't show up. This is exactly what I did:

1. First, I got a base mesh rigged from Mixamo

2. Then I colored in the faces to make it look more human

3. Next I made an animation and each key frame was marked as LocRot

4. Then I opened up the dope-sheet and went to Action Settings

5. I then clicked on the plus sign to add a new animation and clicked on the "F" to save it

6. I did the same thing with the rest of the animations and if I opened up each one, it would come up with a different animation.

7. I then saved the model and exported it into my Unity project as a .DAE Collada file

8. When I opened up Unity and selected the prefab, the animation didn't show anything and there was only one. I switched the rigging to humanoid and it then showed one of my animations, but not all of them.

I had done something similar a few months ago and the animations came up. It might be the new version of Unity, but I'm not sure. Also, with that model, I didn't need to switch it from generic to humanoid.