04 g35 won’t start after running on low oil
 

I was driving my car home from schools which is about 1.5 hours away and I noticed that there was a subtle rattling noise like it happens when the oil level is low. I kept driving for maybe about an hour and finally made it to the store to buy oil. Once I came out of the store I put 2 quarts of oil in the engine and I tried to start it and now it won’t start or even crack. :( is my engine seized? It’s got 200k and it’s an 04 g35 6mt.

Thanks in advance

Welcome, but that's one hell of a first post. How much oil was showing on the dipstick BEFORE you added any oil? When was the last time before this debacle that you checked it?