Firstly, I want you to know that you should be very proud of the progress you've made in your fight against your depression, Abelle~ To go from being completely bed-bound to making and releasing a VN in the span of a year is HUGE progress, irrespective of whether it's the VN you were originally hoping to make.
Secondly, you're being much too harsh on and unfair to yourself—which, of course, is part and parcel of living with depression, but it's important to reflect on it and push back against it, lest it spiral out of control.
To use an example from the work, you mention how you don't know how to draw, and how your lack of technical skill discourages you from drawing any more than once a month for an hour or so. As you know, however, the only real way to improve at drawing is to draw regularly, with even the sloppiest and messiest sketches being important stepping stones in developing the necessary muscle control and grasp of the fundamentals to be a skilled artist.
Shutting yourself down from drawing because you don't like how your art looks, then, is ultimately an act of self-sabotage, one that perpetuates the problem rather than helping you to improve at all. That goes doubly so considering how an hour is scarcely enough time to warm up for a single drawing session, much less when trying to shake off the rust after not having drawn in a month!
That is to say, all of your art is doubtlessly better than you're imagining it to be, and you're capable of far more than you think~ All you need to do is give yourself enough time and space to create at your own pace, without letting any comparisons to others' works or destructive thought patterns stop you before you've even given yourself a chance to succeed. It doesn't matter if your work isn't quite as polished as you'd like it to be at first; that's all a part of the process of learning, growing, and improving as an artist~
I hope to see more work from you in the future!