Đâu là sự khác biệt giữa I want to learn English by myself và I want to learn English myself or I want to learn English on my own.
I don't understand the difference. ?Hãy thoải mái đưa ra các câu ví dụ nhé.

"I want to learn English by myself" and "I want to learn English on my own" mean exactly the same thing. You want to learn English without the help of a teacher or someone else. You can use either of the sentence interchangeably.

"I want to learn English myself" can mean the same thing as the other two sentences but can also mean that you too want to learn English.

For example, your friend says "I'm taking classes to learn English." If you reply with "I want to learn English myself", it can also mean that "as for myself, I also want to learn English." It doesn't necessarily mean that you want to do it by your own.

Another example is when someone says "Hawaii is a beautiful place." You can reply "I want to go there myself" which means "as for myself, I also want to go there." It doesn't necessarily mean that you want to go to Hawaii alone.

Note that "I want to learn English myself" or "I want to go to Hawaii myself", can also just simply mean that you want to learn English or go to Hawaii on your own. It depends on what you mean when you use the sentence.