Very difficult to turn the steering wheel?

This car can have either hydraulic assisted steering or electric. If you have a power steering pump on the engine it is hydraulic, please remove the cap and check the fluid level. Here is how in the diagrams below. If no pump is seen, then the car has an electric system in which case the steering rack will probably need to be replaced but you should check the fuses first.

Here is a guide for that as well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here are the fuse locations in the images below with the additional images from above. Check the fuses with the key on engine off. Check out the diagrams (below). Please let us know what you find.