Hepl me study and have normal life

Hi, my name is Kristina, i am from Slovakia, eastern Europe. I am 20 years old and study last year of high school. I lived all my life with my grandma. Last year after Christmas she past away... I stay in very difficult situation. Social system and my parents send me together about 90euro, what is really not enough for me. I cannot find a job, because of school and my dream is university after high school. I will be thanksfull for any help.