Consider:
Thank God (it wasn't any worse)!
Thank God: (spoken) be pleased or happy: Thank God no one was in the way or on the sidewalk when the bus went out of control
Or
Thankfully (it wasn't any worse)!
thankfully: (Informal) fortunately: Thankfully she wasn't injured
Or
Phew(, it could have been worse)!
Phew: used to express relief
Or
Am I ever lucky!
Or
Lucky me! (can also be meant sarcastically depending on context)
Or
Lucky me -- and lucky you, too! (Here's the money)
Or
All's well that ends well!
Or
Thankfully, it looked worse than it actually is!
