Me and my girlfriend are in relationship from last 5 years. Now she say she wanna move on. What should i do ?

Me and my girlfriend are in relationship from last 5 years. Now she is very negative about me because we are having fights on daily basis. She says she wanna move on because of these fights and she is unsure about her future with me. The reason of most fights is she is very scared of her family members because of that she lacks spending time with me outdoor. She is not cheating on me and i am sure about it. I dont wanna lose her because of my silly mistakes.