Not super unlucky, but I think you have gotten a bit accustomed of getting 5 or 6 stars "every" or "almost every" time. A draw like that is normal. Just the fact that you got some 5 and 6 star girls before you should consider yourself lucky.

There are players that have been playing since the very start of the game and has still not been getting any 5 or 6 star girls, (gacha girls from gacha draws).