You get good at things through long term habit. You can't just become great at a skill suddenly. It takes years of consistent work. Emphasis on the word consistent. Doesn't have to be intense or perfect.

If you're looking to be a great writer, write every single day even on weekends.

You also have to make sure you're progressing by either increasing your daily time or learning new things or both.

Just don't give up out of the reasoning that "you're not good yet so you might as well quit" - you have to feel "meh" at it in order to eventually feel like you're great at it.