I'm european am I more susceptible to becoming an alcoholic?

Unclear. The term "european" includes a huge and varied group of ethnicities, all with differing rates of alcoholism. The best way to predict your potential risk would be to look at the histories or your immediate family. If there are multiple close relatives who are problem drinkers, then you are at increased risk.
Mutual support helps. Alcoholism is an equal opportunity disease. If you are concerned about your use of alcohol, consider attending a meeting of alcoholics anonymous.