This psalm is a prayer for help. Parallelism is common in Hebrew poetry. (See: [[rc://en/ta/man/translate/writing-poetry]] and [[rc://en/ta/man/translate/figs-parallelism]])
The writer describes the troubles in his life as if he were drowning in a flood of water. Alternate translation: "for it feels like I am drowning in the waters" (See: [[rc://en/ta/man/translate/figs-metaphor]])