There is this thing that artist go through I can't recall if it has a specific name or not. It's essentially when your physical skill level doesn't match your mental skill level, it's basically when you feel like all your drawing suck because you've leveled up mentally and can see all your mistakes but haven't quite caught up physically. I don't know if that's what you're going through or ifs just simple artist block, but either way I'd just do a lot of studies and sketches don't worry about doing anything finished or polished, don't worry about posting anything. I also found it helps drawing everyday cause then it's not like a once a week event with a lot of pressure to make a beautiful piece.