I don't think I'm being too critical

People, especially on social media, always say: "Oh, you're being too critical!" "You're a good artist!" but I sincerely beg to differ. First of all, I've only been doing art for 2 years so far. Second of all, I know what good art looks like. And I can appriciate WHEN I make a good drawing, but they usually aren't. So, if I think my art is bad except in rare cases, is that being too critical or am I just being realistic/sincere with myself about my skill?