Blender Animation Missing

I am new to Blender and Unity and have been learning both systems for about a month. For learning purposes, I have created a simple 3 sided mesh box and animated it by rotating it 180 degrees using the Action Editor using Blender. When I add the blender file to my Unity project I see everything BUT NOT the animation clip. Do I need to rig the object or any object with a bone and then animate the bone for Unity to see the animation clip? Can anyone help me?

I don't know if you have not exported the scripts of python in blender but in fact this happened to me but it was because I did not have the scripts of python, but when exported there many places where you can exported so you choose that one that says fbx then click and you'll see There are many options and some of the animation in which you have several options in which you can modify it as your taste

Unity doesn’t support animation action keys that is why you couldn’t see your animation first time.
Like you noticed if you want to animate something in blender and take it to Unity you need to do it via bones/armature since that is what Unity supports. If you want to do something as simple in unity as rotating it 180 degrees simplest way to do it is animating the object in Unity.