Kindly refer to the following link(s):
Must I get permission from my first wife to marry a second? (fairness between wives)
127066: The wisdom behind the Prophet’s marrying more than four wives
Rules of Polygamy - Fairness between wives
Has a woman nullified her Islam for doubting the permissibility of polygamy / Rejecting hijab?
Does hating something of Islam make me an apostate (hating hijab, waking up for fajr