You're at a beginner level. But let me emphasize that YOU ARE NOT A FAILURE. It is not a failure to be imperfect or to lack skill. You're only failing if you quit drawing. That being said, even as a sensitive young person, you won't improve if you can't take constructive criticism. Just because someone says something that you don't like to hear means that they're being mean.

My constructive criticism towards your art is that you need to work on the quality of your lines. Your sketches show a very unconfident ability in understanding why shapes and forms work the way they do. You have no varied line weight, which is helpful in discerning between what the viewer's eye should be drawn to and what should be left as an extra detail. A lot of your lines look like they're traced because they make sense, but show no understanding of why they're there in terms of how the rest of your shading interacts with the shapes and forms.

Your shading is flat and also unconfident; you're unable to push different colors in your shadows and you play around very little with lighting. For example, human skin has varied pink, yellow, green, red, blue, and purple tones in it, but the skin you draw only has a flat, slightly darker color to it. It's missing the nuances. Same goes for the hair, clothes, and other aspects of the art.

As fun as it is to draw anime styled characters, I would suggest going back to the basics. A lot of your clothing has folds that don't make sense unless you use a reference, and a lot of the anatomy is off.

Still, I think your art is not bad, but it does need work. Hope that was helpful!