Im I doomed if I live with family?

Nobody really responded to my last post but I really need some advice about this. I live with non covid conscious family and my partners family is the same and it feels like asymptomatic infections are inevitable if I want to see my partner unmasked or do anything in my house. I basically live in my room and have an air purifier and fan going but I feel like its inevitable to get it as much as someone taking 0 precautions. Im testing as much as I can but I cant deal with the never knowing for sure.