A concubine's daughter is reborn and I want to enter the palace!

In her previous life, she was humiliated and watched her young lady die in front of her, but she could do nothing. Her stepmother was strong and vicious, and her stepsister was domineering, repeatedly framing her into dire straits. Her father didn't care about their lives at all, and she was plotted to marry a cynical and disrespectful playboy. She was humiliated in every way and died a miserable death. Unexpectedly, God gave her a chance to live again. This time, she wanted to enter the palace, she wanted to be favored, she wanted to have supreme power, and she wanted to trample all those who trampled on her under her feet! ...