We don't choose our parents, but we end up with them anyway! Some incredible miracle of science and biology caused you to be here. Get on with being here now that you are and enjoying the process of living the best life that is possible for you.
You can have some siblings or none at all. You may have aunts and uncles, nephews and nieces, and long lost cousins for all I know. See that there is a connection to these people and that through this weird and wonderful structure called family, you are connected to everyone else.
Your parents and anyone else who was involved in the process of raising you, performed an amazing job to bring you up in the world and contribute to the unique human being you are today. It is true that how you feel about them can either hold you back, give you strength or leave you with confusion, but they did raise you, probably when life was difficult and you were awkward or just downright hard work. Even if it is just an acknowledgement, you owe them something. Look out for them.
All too suddenly your connection with those you love and care for can take a turn in a new direction. It could be an incident, a conversation that goes the wrong way, a misunderstanding, or some confusion that triggers a reaction other than the one you have always intended.
They have done good for you and allowed you to be who you are today. Take the time to say thanks and to acknowledge and recognize what it took to make you the amazing human being that you are. They do deserve it.
We all appreciate an acknowledgement, a word of thanks, a small or a large gesture that we have done our best. For family this is just as true. Give the process some thought and then give them some of your attention.
Acknowledge the good relationships you do have. Consider how you might strengthen them, spend a little more time in them, invest in them emotionally for the benefit of all concerned.