Do you think only foreigners learn English? if you think so, think a little bit about your language, who is learning your own language? of course a lot of native speakers!
That's the same with English, even native English speakers learn English.
That's why the word "English as a second language" was created, just to make the difference between learning English for native speakers and for foreigners.
If you are a beginner, never try to be clever and try to learn English as a native speaker, never!
That's true that you should listen to what they listen to, watch what they watch, but you should never study what they study.
Native English speakers do study English grammar, they study the structure of the language and it's very complicated.
English learning is not something that you can do randomly, you should follow some steps in order to learn to speak English fluently:
1-Look for English material for ESL learners.
2-Don't study English grammar up to the point you'll be an advanced student.
3-Never memorize word lists.
4-Listen to real English conversation.
5-don't listen to formal English.
6-10% of your learning should be reading.
7-do only simple English reading even if you're advanced.
8-Simple English reading differs for each student.
9-Simple English reading means you understand more than 80%.
10-Talk with native speakers or your English friends.
11-If you speak English fluently, then focus on grammar and formal English.
12-Practice English if you don't want to forget it.
13-Take some holidays whenever you need to.
And the list can go even more if I want, In the next ebook you will find more tips that you can apply immediately and then improve your English speaking and writing skills.