What would be a good song for me 2 sing?

I am not a good singer at all, but I want to get better, and I need a
song to sing at this summer camp. Something really easy, and something
that would make my voice sound descent. I want something with meaning
too, though. Not like "Twinkle Twinkle Little Star" No nursery rhymes.

Also if anyone has any tricks or helpful information about getting
better at singing, please let me know. thanks to all of you guys.
10 points for the best answer.