Will I Be Happy if My Family is Not in Heaven?

In this episode, Dr. Betters answers the question, ""My question for Muslims Christians, and Jews is this: if being in heaven means you are eternally happy that means it must be perfect but how will I be happy if for example, my whole family didn’t get into heaven but I did even if they weren’t evil they simply just were non-believers? Also, how is it fair that someone can live their whole life putting others before them and living life the way ‘god’ would want them to accept the fact that they didn’t believe in their creator makes them doomed to hell whereas an evil person who has repented and then says, for example, goes out after repenting and gets hit by a car meaning they have no chance to ever go back to sinning could still go to heaven?"