svg animate

Question

Hello everyone. Why doesn't the circle move?

<svg width="1000" height="1000">
<rect width="150" height="150" fill="orange">
<animate attributeName="x" from="0" to="300"
dur="3s" fill="freeze" repeatCount="4"/>
</rect>
<circle cx="75" cy="75" r="75" fill="orange">
<animate attributeName="y" from="0" to="300"
dur="3s" fill="freeze" repeatCount="4"/>
</circle>
</svg>

Regards.

Answer 1

I found a reason.

<animate attributeName="y" no correct
<animate attributeName="cy"