I'm intrigued.

You've been flying with an instructor who cleared you to fly solo. And you then did some bad landings. And now figure it's the flight sims fault?

It's your fault. Not the flight sim nor the instructor's fault.

You've had two different opportunities to learn the proper FUNDAMENTALS. One of them, the instructor you've been flying with and who thought you were ready to go on your own, is more responsible for your performance than the other. But bottom line, you're the one flying the airplane. Maybe you weren't actually ready and needed more time with the instructor, but then, he said you were ready. Blame him? nope....

But I'm still intrigued. What is it about having an opportunity to practice some things on the pc that make them responsible for your landing hard a number of times?

You do know that you can turn up the turbulence and wind and variablilty of both on one of the better simulations, don't you? But the fault isn't that simulating without the difficulty factor turned up can cause problems at the field. The fault is believing that if you've done a few hours on a pc simulator, that any bad landings you then do at the field are then attributable to the pc.

If you're going to look for a scapegoat for those landings, why not include your instructor.