Why haven't you ever tried actually making manga/anime?
Because i actually suck at drawing irl.
Although I did do some editing/cleaning for a manga, but the project fell through cus everyone else was lazy as fuck.(i did my work in like 5 hours for each chapter and it took them 2 weeks to post the finished chapter, after i was done all that was needed was text, so they were extremely lazy.)>
And just on a side note: Cleaning/editing is easy for popular manga because they get people who buy the manga just to put out excellent raws, and still pretty easy for non popular manga(except dorohedoro or maybe gantz), but it takes a serious amount of time for what i could read in 5minutes.