Try using a reference, I personally love to draw Benedict cumberbatch, or a music artist, or a YouTuber I like. If you feel like you need to improve, never feel bad about copying (unless you call it your own) it helped me greatly, so just use references or just copy. You could probably start by looking on YouTube for tutorials on the fundamentals of the face and body (I think that's what it is) or I just like to just search something and copy from an image I like, that's how I improved in my artwork. Hope this helps :3

Hmm, just search online for stuff that you need to learn ( I commonly search 'how to draw a muscular male body', that's how I improved my male figure, I used to draw only women lol ) like search 'how to draw a female face', find it too difficult? Search 'how to draw a anime female face( or body, whichever you need to improve more)' because anime, which is not only a beautiful style of artwork, cartoonifies (?) the face to make it easier to copy, and is in so many different styles to choose from, then you can slowly learn the facial structure and how to draw it, then you can slowly adapt to a realistic style. Once that's accomplished, you'll have enough artistic knowledge to make your own style. <3

I'm not an art teacher, though. What I'm saying is from my own personal experience, if it doesn't work, that's fine! You'll have to experiment with what works for you, whether it be videos, books, or just what I did, use reference and copy. Remember, I'm only a self-taught artist, I don't really know other ways to learn from, and I didn't learn professionally, but it's what worked for me, and I hope it works for you too!! Also it helps to listen to music while you draw, it's background noise and it doesn't make you as bored.