No, this is not a near miss. It's called a "go-around" or "missed approach". The former, in this case as there was traffic on the runway. If anyone was at fault, it's the approach controller or ground controllers (or both) at the Doha airport. Not Qatar Airways.

Again, it's unlikely that it was a mistake. Probably for some reason the aircraft that landed earlier could not vacate the runway on time.

BTW, what the heck is a "near miss". It's either a hit or a miss.