White just took the pawn on f7, as black find the only move that maintains an advantage

I analyzed the image and this is what I see. Open an appropriate link below and explore the position yourself or with the engine:

Black to play: chess.com | lichess.org

My solution:

Hints: piece: >!Rook!<, move: >!Rg6!<

Evaluation: >!Black is winning -4.08!<

Best continuation: >!1... Rg6 2. Rb7+ Ka5 3. Rb5+ Ka4 4. Qa7+ Qa6 5. Qxc5 Rh6+ 6. Kg2 Nd3 7. Qxd4 Ne1+ 8. Kf1 Nc2 9. Qd7!<

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Idk but white missed Qb7# last move