I have two fans, one that spins freely with my own hand and the other one when I try to spin it while the engine is off, It won't spin. it's like stuck I tried to spin it but I don't see anything preventing it from spinning.

I think it's a bad radiator fan motor.
I want to change it but I can not find one single video or anything online on how to replace the fan motor.

Any ideas ?

 

I'm pretty sure you don't have to remove the fan assy completely.
Just loosen whatever fasteners you find and lay the assy back far enough to remove the defective motor.
If you purchased an aftermarket motor, you might need to do some alterations, if not a Hyundai motor should go right back in with very little or no problem.
Of course you will need to remove the fan blade before you can remove the motor, but you should be able to see everything.

 

Thank you i will try my best
I couldnt find any diagrams or videos online

 

Let us know when you are going to do this and maybe we can be available to offer some help.