The answer is YES, you have a chance. That of course includes proper radio guidance. In a German tv show they have tried it once, letting a completely unexperienced woman and a quite experienced PPL try their luck in a simulator.
While the woman failed miserably, the PPL guy made it.
They didn't say which attempt that way though, kind of pretended it was the first, and of course a real emergency is by far more difficult. There won't be a sim instructor sitting at his radio 24/7 just waiting for the occasional PPL trying to land an airliner and needing guidance.
But in such a real situation it couldn't hurt to try it nevertheless. A little chance is better than certain death of all people on board.
And it's not like you have to land within 5 minutes (usually).