It's pretty difficult to open a true short position. Providers like Robinhood create contract for differences which are subject to their TOS.

It's been proven that people who do fuckall after throwing their money into mutual funds generally fare better than people actively monitoring and making stock moves.

You're probably fine.

I never bought NVIDIA in the first place so this news doesn't affect me.

If anything now would be a good time to buy NVIDIA. But I probably won't.