Sorry, but I don't believe you're the only one holding that phrase. It's an old scam where you get a phrase from a random person online & then enter it into your wallet. Seeing all the assets inside, you want to steal them all, don't you?

So far, I see there's about almost half a million $USDT there, I'm not sure you're that rich. Then, to answer your question, you won't be able to steal it from there, trust me, those programmers are smarter than you, they will just make their victims send $TRX to that address.