Hello I have refridgerator listed above

The freezer makes a horrible sound when running, today when I came home I couldn't take it anymore. I removed three plastic pieces that go around a fan in the freezer. I can see that the fan wobbles a little bit if I out my finger on too of the pin that goes thru the fan (and stabilize it) it stops the sound.

I called GE $85 to come and look at it. I'm kinda handy and don't have the money to have someone else do it as I recently bought my first home.

Any idea what I need to replace?

Freezer and fridge are nice and cold. Just horrible sounds when running. Like the plastic fan is bumping into the plastic housing. Surrounding it.

Thanks!