I think you are being a bit hard on yourself. Mastering blender takes years and even then there is still more to learn.
My advice would be to focus on what interests you to start with. For example, if you like hard surface modelling start with that. Watch tutorials on how to make something simple and how to texture it. Then have a go at doing it yourself. Then watch another tutorial making something else then have a go at that and so on. Whatever topic you like, start simple and move on from there. Go into it knowing it isn’t going to be great but one day it will be. Your art may not be the best for now but it WILL get better and improve if you put in the time.
Also, in regards to your comment about time, no when you are learning, things take a long time. Im currently learning rigging after doing a course on here. What took the instructor 15 minutes took me hours and it still isn’t right. You have to realise though there is years of experience and thousands of hours practice between us though!
You will get there! Don’t give up!
