groom myself
I don't like the way this sounds! Like something a pet might do...
by receiving an educational foundation and degree in marketing----I think you use too many words. Simplicity is better. Instead of a formal tone, use meaningful ideas...
because I want to be prepared for my future as an international marketing analyst. not meaningful... just a common, obvious thing you will say if this is your career field of interest.
I will tell you when I find the first meaningful idea...
Here it is:
At each country, I exposed and adapted myself to the country's cultures. However, despite these countries' differences, there was one similarity I noticed and became very interested in - marketing to consumers.----Awesome, Victor, now scrap that whole first paragraph. This is the theme worth writing about. If you spare them the wordy intro and just start with this paragraph, it will get them to stand at attention right away. It is a thoughtful insightful idea...
I don't see any grammar errors...
My professional objective is to be an international market analyst. ---See this? Not meaningful. That is the kind of informative sentence you need to limit. If they can understand that based on what you have already said, do not make them read it again. Refer in passing to the intention to be a market analyst, but don't invest a whole sentence in it. Make every sentence a fascinating step in the exploration of that great theme about selling to consumers.
:-)