While playing 5e with my playgroup, I made a staff strike, along with Flurry of Blows with my monk going for the extra 2 unarmed strikes. For this, my DM made me take a total of 2 attack rolls, one for the staff strike, and one for the "bonus action/attack." I failed the second roll, and was told that both of my unarmed strikes miss the target.
Now this made sense at the time, because I assumed that the two strikes are one action. That was until I read on here that I target multiple creatures in range with the two unarmed strikes. So with that being said;
How many times should I be rolling for attack when using Flurry of blows alongside a normal attack with a monk weapon?