The word “baklava” is of Turkish origin, where it’s pronounced with the stress on the final syllable. Ditto for its borrowings into Greek and Armenian, whose speaker communities also had a significant role in introducing the dish to the Anglosphere. If, like me, you were first served baklava by a native Greek, Turk, or Armenian, then you probably learned the pronunciation with the stress on the last syllable, and you may even prefer it despite this stress pattern being unusual in English. If the dish reached you via a more indirect route, then it’s more likely your pronunciation uses a more typically English stress pattern.
It also wouldn’t surprise me if there are people who try to pronounce “baklava” similarly to how they pronounce “balaclava.”
I asked for Balaclava in a store in Greece when I meant Baklava, they had a good laugh at my expense.
I think it’s because DB is database, whether for internet movies or something else