Besoin d'aide en Anglais

Bonjour j'ai un Dm a faire en anglais, et je parle assez mal la langue, j'aimerais que quelq'un me corrige les fautes si possible. Merci beaucoup d'avance.
Dear Barack,

I hope you are fine.

I received your letter where you offered to help me leave Kenya. Thank you very much for this offer. I’m very grateful of this initiative. Certainly, I know that the life in Kenya is hard, the unemployment rate is high, the poverty is present and as you have noticed the last time, tourists invade us and the askaris take the African women as prostitutes.

So I could have a better life away from this country but I must refuse your invitation. Even though I know that this opportunity will not arise twice, I want to stay in Africa to fight for what I believe in.

Firstly, compared with the African waiters who considered me like a poor African woman and who preferred to see to the American family. This was humiliating for me. And after, when you spoke to me on account that you couldn’t go to club in any of these hotels if you’re with another African woman, that infuriated me.
Indeed, I want to try to fight against prejudices’ askaris => phrase a revoir: que veux tu dire?

That is to say prejudice towards Africans, and particular towards women. You know, I don’t want to that Askaris take the women for prostitutes anymore and I want too they stop to do (passage a revoir) their false smile at German or American tourists. You understand that, even if, this situation exists in other countries, I want to stay here. I was born in Africa and I'm attached to this culture. That’s why, I have to fight for my country, it’s my pride.
I am looking forward to seeing you

I want to try to fight against prejudices’ askaris => phrase a revoir: que veux tu dire? .
Je veux dire : " je veux essayer de me battre contre les préjugés des Askaris. Il s'agit bien des préjugés qu'on a SUR les askaris, et pas des préjugés que les askaris ont sur d'autres gens?? si j'ai bien compris je mettrais: (histoire de ne pas répéter prejudice que tu emplois juste en dessous. Juste si je peux me permettre : ces askaris tombent comme un cheveu sur la soupe, j'ai besoin de précisions sur le contexte sinon c'est obscur, ta prof dispose-t-elle bien de ce contexte???

I wish I could fight against preconceived ideas about askaris.

Si ce sont les préjugés des askaris envers les autres :

I wish I could fight against preconceived ideas held by askaris.

I want too they stop to do : et ici je veux dire : je veux aussi qu'ils arretent de faire ..

I also want them to stop faking smiles at......

Comment puis je reformuler ces deux formules? Il me faudrait une réponse avant ce soir, car je dois le rendre demain, merci beaucoup pour l'aide