My friend recommended me this good community. However, I'm new to this format so I had no idea about including a chess game in my text. By looking at the previous questions, there should be some way to include my game, but I couldn't find this so instead I brought the picture of the part I was wondering about.
Why the above position almost winning for me? As indicated in the picture, chess.com's depth 18 engine is marking it as -7.4, but I have no clue about it. I couldn't find any tactics nor throughout the computer's suggestions.
Some information about that would help you answer: My chess.com rating is at 1100~1200, and been playing chess for about six months. I have mo experience in learning chess theory, only solving puzzle rush every day.