I have a few things DON'T THINK YOUR ART IS BAD
i have a friend who's stuck in the loop of constantly thinking her art is bad and there's almost been no drawings she thought have been good, and they've always been really good. TAKE PRIDE IN YOUR ART! DON'T COMPARE YOUR ART TO MORE EXPERIENCED ARTISTS
if you do want to compare it compare it to someone who you think has a similar skill level to you or slightly higher and look for what you can improve on within your art YOU CAN ALWAYS IMPROVE
If you don't like the way your current style or art looks, you can always improve. Look at the way other artists have drawn something similar, and figure out how you can do something like that. THERE'S NOTHING WRONG WITH TRACING IF YOU'RE TRYING TO LEARN FROM IT!!
DON'T USE AUTODESK SKETCHBOOK
it's the only program that i am able to use (as i do art on my school pc and we can't download anything off the internet)
and it's actual trash!! i would recommend medibang paint pro or paint tool sai all the way.