Today's Gospel depicts suffering of certain people - did they suffer more because they sinned more? No. But unrepentance leads to perishing. How to connect this with the meaning of "Gospel"? Tragedies signify a broken, rebellious world, not a God who lacks love or does not exist. Such is our existence, but not directly our fault per se. But it is not God's fault. It is ours. Our response is repentance and contrition.
Tragedy serves to turn us from ourselves to the Savior, Jesus Christ. Why? He bore our rebellion's tragedy in His death. He most certainly does exist, and is love, for the fires of hell fell upon Him instead of us as we would have deserved. We worship to be freed from these tragedies. And indeed we partake of a greater reality that - like tragedy - turns us to Jesus, the Pierced-for-us, our Tabernacle-of-refuge. The Lamb's blood feeds us and gives us life and rescues us to eternal life. God's love never fails. See this love in worship. Repent daily. And be sanctified daily.
Soli Deo gloria.