I don't mean posting a new fic and it just didn't work. I mean you posted a new fic, it did really well but then you noticed a lack of reviews, faves and follows or you actually lost some after a while of posting updates.

I just leave all of my work up. I've had a fic that hadn't gotten a review for months and suddenly someone dropped into say that they were surprised that it didn't have any because it was a good fic. So I just leave all of my stuff up; I worked hard typing it so why not leave it.

Well I deleted the fanfic because I thought it wasn't good. I had written that one a long time ago and I knew that I've improved since then.

Well, that's a good reason to delete a fic. If you're not happy with your work then sometimes deleting is a good option to take. I've done that and actually turn out something better than before :)

^^That's slightly different from deleting a story due to bad reviews or lack of reviews, though interconnected. Would you have deleted or rewritten it if you liked it personally but the reviewers didn't?