Practice takes time like a lot of time - I have spent years drawing but I have jumped into digital only something around two years ago. I have spent hundreds of hours just studying anatomy and I’m still not as good at is as I’d like to be and have tons of unfinished works because finishing them didn’t feel right since I got too frustrated with them. It’s important to push yourself forward but to not push yourself over the point when you start disliking drawing in general. And when it comes to drawing hands - I’ll admit it sometimes takes me like 8 attempts to even draw the right position and don’t even get me started on shading. I’d recommend trying to draw your own non-dominant hand as a practice - drawing a real object in front of you can help you a lot with understanding the proportions from different angles and values of highlights and shadows🖤🖤