You're not a beginner, that's for sure. Your rendering and design sense seems to have been practiced a lot. Figure out what you want to make, notice what's falling short, then target that specific gap with fundamentals. Don't grind through generic courses hoping it pays off. For example: want to be an environment artist but struggling with depth? Study perspective. Want to do sketchbooking with cross hatching but lacking simplification? Learn form and values. To sharpen self-assessment: compare your work directly to artists you admire and ask "what can they do that I can't yet?" Break it down technically. Also notice where you avoid or rush through things in your own drawings. Those avoidance zones often signal weak fundamentals. Your level is just the distance between what you're making and what you want to make. There's no universal "level" that matters outside your own goals. I can't recommend enough to check out Artwod that provides many roadmaps for every subject matters and levels.