Bonjour Cynthia !

First of all, you need to know that Qatar is a masculine country in French, so you will say:
J'habite au Qatar.

See: Using en with feminine countries and au(x) with masculine countries to say in or to (prepositions)">Using en with feminine countries and au(x) with masculine countries to say in or to (prepositions)">Using en with feminine countries and au(x) with masculine countries to say in or to (prepositions)">Using en with feminine countries and au(x) with masculine countries to say in or to (prepositions)

Secondly, from your name, I assume you are a woman, so your nationality will have to agree accordingly:
Je suis kenyane. 

See: Nationalities differ in French depending on whether you're a man or a woman (adjectives)">Nationalities differ in French depending on whether you're a man or a woman (adjectives)">Nationalities differ in French depending on whether you're a man or a woman (adjectives)">Nationalities differ in French depending on whether you're a man or a woman (adjectives)

I hope that's helpful!
À bientôt !