I am a 23-year-old girl who has just graduated from university. Our family always quarrels. It seems to be a war between my parents and me. Sometimes I don’t understand my parents’ ideas and they don’t understand me. Each other seems to be enemies. It's hard to talk together. Now we almost don't talk because we know what each other will say. When my parents are accusing me, I don't think they love me. I feel lack of support. I always feel bored alone at home,
There is probably fault on both sides. So first of all you need to be clear yourself whether (1) you have been saved by grace, (2) you are living for God and Christ, and (3) you are showing Christian love to your parents (which includes honoring them rather than arguing with them).
If you have just graduated from university, chances are you have been indoctrinated with all kinds of liberal, anti-Christian and Communistic ideas. However, if your parents are conservative (in every way) and are also Christians, they will automatically be in conflict with all the Leftist nonsense. So you also need to ask yourself if you have become a Leftist liberal.
As long as you are at home, you are under their authority (regardless of age). So you have to make up your mind as to (1) whether you are you going to pursue a Leftist lifestyle (if that is the case), and (2) whether you are going to find your own accommodation (with your own income), and leave your parents to their lifestyle and their lives. You are technically an adult, but may not be one mentally or emotionally. Only God knows your spiritual condition.
If your parents did not love you, they would not trying to be put you on the right track. Chances are they supported you through university. So now you have to take a good hard look at yourself.