Being jewish in a mixed family

I’m from Latin America, i’m mixed in a way, my mother has sephardi direct descendence (for this i considered myself as a jewish descendent, i’m still not a halachic jew but i respect and i believe in the jewish law) and my paternal family is catholic, when i meet with my paternal family for some important holidays for them (like easter or christmas) i’m always afaired for antisemithic comments specialy from my grandma and uncle, for this i’m sometimes stressed but i can’t do anything because i live with them.

I only wanted to tell this to people who can help me or give me some tips for endure this.