Here's what happened:

I've done art trades, over a dozen of them, but I've been scammed out of three artworks. I contacted two of them, and they seemed evasive and apologized, but then I haven't heard back for over two weeks.

I don't need them to draw beautifully, but they should at least appreciate my effort and complete the work quickly!

I didn't want to ask too many questions because, firstly, I was afraid they'd accuse me of harassment, and secondly, even though I messaged them politely and was very considerate because I knew that rushing them too much would bother them, they didn't bother returning my artwork anymore, and some even forgot about my artwork altogether