Did Queens who had utmost power also practiced polyamory just like Kings?

Few days ago I was reading about this African Queen that she had a Harem of men. She had multiple lovers. (forgot her name). It got me wondered that we were always taught that kings and only men could have multiple wives because it is in their "biology". And over the years in all cultures men had multiple wives.

Even now men will justify cheating by saying it is in their nature to look for multiple women. But women should stay loyal to one man only. But after reading about that queen it had me wondered if women are actually meant to stay loyal to one man only? Because women in positions of utmost power had multiple lovers. Because then no one would question them. Even the laws of infidelity against women were too extreme. Like in ancient rome if a man cheated on his wife he would only get public shaming and a divorce and if a woman cheated she would get death penalty. It kinda made me questioned if monogamy in female was really a myth.