Yeah... That's too accurate tbh. If I counted all the drawings I did during these almost 9 years of me drawing almost daily I'd go crazy over it not to mention that I have lost like 90% of all those drawings already.
And then compare my tiny pile of drawings to those of professional artists.....
Most relatable thing i've seen all year, my art kinda sucks and i look at all of the awesome art out there that is so smooth detailed or perfectly fitting of the style they need, and here I am like WUUUUUUUUUUUUUUUUUUUUUT HOW U DO SO GUD?
I think that not only drawin a lot helps you. You need to DETECT what do you think you're doing wrong. Like if you draw your characters with one arm longer than the other then you notice that you need to improve your anatomy. But yeah, still true you draw a lot to get good