Your voice needs some work, you didn't sound confident and some of the words felt they were painful on you to sing. Particularly, the hook "doo doo doo do do doo" at the end sounded weak. If you want to improve, I say get a vocal teacher.

Another thing, your rhythm was a bit sloppy, but then again, you had no click/drum track. If you were to do the song live as a performance, play on acoustic and maybe change the arrangement.
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