Fear is the first thing we hear in this poem, and the speaker never lets go of it. Addressing "my love," they ask to be found, and they say it three times in slightly different ways: "find me," "search for me," "find me" again. The repetition makes the plea feel urgent, almost like someone saying the same words over and over because they have nothing else left.
The images all point downward. The speaker is "sunken" in a "sea of sorrows," then "buried" in darkness. The setting seems to be less a physical place than the speaker's own mind and heart, which suggests deep sadness, anxiety, or depression. Being lost inside yourself is a lonely kind of trouble, and that may be why the speaker needs someone else to reach them.
The mood is quiet, fragile, and heavy. There is no anger here, only vulnerability and hope that love might pull the speaker back up.