Few feelings towards NA solo ranked

Hi, My dear American friends, I am 1ampre, my old account is called Lampre. from China, my main in China is plat. Here is something that I feel in the game recently: and here is some types of people that I meet in the rank game recently, that I feel why those people are so naive.

1. happy stay in this elo.
2. if I made some grammar mistake, they will tell me go back to my country.
3. people who think KDA is shit.
4. ALL the people think they are better than others.
5. How can I improve myself to be better? I hope some support can understand the strength of my role and play safe, but.

I just feel so tired to climb, and people are getting so much better recently, when I play gold, I feel like I play in the d1.