After having used ChatGPT for a bit i am not trusting its output at all. If i don't know the answer and it gives me one, how am i supposed to know if it's true

After having used ChatGPT for a bit i am not trusting its output at all. If i don't know the answer and it gives me one, how am i supposed to know if it's true? 20% of the time it just made something up.