Yes, it’s complicated. The damage to your Unit was to your floating wood flooring, which is the owner’s property, not common property. If the cause of the water was from common property, such as a broken pipe supplying several Units, then you should have a claim against them. If the cause of the water was from a specific owner’s property, then you should have a claim against them.
Talk to your strata manager. But his is why owners get contents insurance. Without that, you will need to fund the repairs yourself. And making a claim against the other owner might involve legal proceedings, which will cost you, too.