Why did I get 0 karma for my entry?

The most common reason

There’s no recognisable action in the entry — just a word, a platitude or a pure description of a mood. Then the evaluation has nothing to show a mechanism on.

Too vague: "It was a good day." Concrete: "Ran my ten minutes even though it was raining."

What helps

Describe one single, concrete situation: what you did and what was in the way. A small step is enough — that gets +1 too.

Don’t get discouraged

0 doesn’t mean your day was bad, and nothing is taken away: karma is never deducted. It just means there was no action in the text.

And karma isn’t the central number anyway. What matters more is whether a classification comes out that you can confirm.