Should I lie to my family about my grades?
Why do you feel like you needed to lie about your grades?
I want to be honest with my family about my grades but I can't accept having them be disappointed in me.
While it is understandable that you feel embarrassed about receiving bad grades at school, it is wrong to lie to your family about them. You won't be able to hide your grades from your family forever and they will be even more disappointed that you lied to them in addition to receiving bad grades. You should be honest with your family, even if it is difficult, about what is going in your life.
I just really want my family to accept me and to love me.
You are assuming what will happen if you tell them the truth, but you don't really know. The only way you can know for sure is to tell them and take it from there.