Will a diploma from a national university rather than a british one impact my future too much?

Hi guys. So I was born and raised in Brazil okay. But I moved to Egypt when I was 15, am doing year 11 in a international school that uses IGCSE system. This will be my last year in school.

I am planning to go back to Brazil and study for the national exam to hopefully study in a good national university there. But my parents want me to stay in Egypt and study in a university that uses a british system, and it's also very expensive.

I showed them that some unis in Brazil also have high rankings, but they said that it will never compare to getting a diploma from a uni that uses british system.

Will my future be affected too much if I choose to study in a uni in my country of origin which is Brazil rather than studying in a british one in Egypt? I just don't like the country, don't identify with the people/culture, have trouble with learning the language, etc.