Nausha Ameen's "waves" compares the speaker's inner life to an ocean. Sorrow isn't something that visits and leaves. It lives inside, rising and falling like water. The line about something that "grows and collapses" every day suggests a constant cycle, where hopes or feelings build up only to break apart again.
The speaker is open about being lonely, and the words "terrifyingly and unfair" show how heavy that feels. Then the tone shifts. "Don't worry" sounds like someone comforting the reader, or maybe themselves, and the poem ends on a surprising note: "I'm happier in this." That last line can be read two ways. It might be real acceptance, a peace made with sadness. Or it might be a quiet attempt to convince themselves. Either way, the mood is calm but wistful, like watching the tide come in and learning not to fight it.