The truth is. It's not a question, how to become better. It's straight forward, you don't even need to practice a lot. You don't practice, you play. Playing doesn't make you better, playing a lie.
It's like look at those 2k hours dota guys, they're merely 1500 mmr. Playing a lot doesn't make you great, it's a waste of time. Getting better is about applying effort into becoming more efficient, learning what works that doesn't and why and then developing or stealing and applying strategy, remembering it, saving it in move memory whatever.
The problem why people suck because people don't do this, they don't think I lost because of this and that and could try this or they don't watch how other handle it and imply their methods. They just waste time playing and never work on actually getting better