I mean I did put a lot on my plate, but I was sure to eat everything.
You didn't take more than your share did you? Why did you eat everything?
I ate everything cause I was hungry
That's great you were able to satiate yourself, but you should be more careful next time since you might not be able to finish that much. You need to portion correctly so you can be considerate and only take what food you need and save it for the other people.
I'm going to eat the food anyway so it doesn't matter.
It would be more considerate if you took a reasonable amount first. Then after everyone has gotten a plate, you can get more if you're still hungry. It's nice to make sure there's enough for everyone to get some.