It's foolish to say that women are always the villains in the Bible. You could only find three.
Joseph's brothers sold him into slavery. There were 33 evil kings of Israel and Judah following Solomon. Dathan along with Ibiram and 250 Israelite leaders rose up against Moses and were all destroyed. Joshua and Israel killed 31 Canaanite kings. I could go on and on and on.
The Bible is clear why Herod's wife wanted John the Baptist killed.
(Matthew 14:3-11 NIV) Now Herod had arrested John and bound him and put him in prison because of Herodias, his brother Philip's wife, {4} for John had been saying to him: "It is not lawful for you to have her." {5} Herod wanted to kill John, but he was afraid of the people, because they considered him a prophet. {6} On Herod's birthday the daughter of Herodias danced for them and pleased Herod so much {7} that he promised with an oath to give her whatever she asked. {8} Prompted by her mother, she said, "Give me here on a platter the head of John the Baptist." {9} The king was distressed, but because of his oaths and his dinner guests, he ordered that her request be granted {10} and had John beheaded in the prison. {11} His head was brought in on a platter and given to the girl, who carried it to her mother.
The Bible is real history about real people, places, empires, etc. It details the sins of its heroes as well. Like King David having Uriah the Hittite killed to cover up his adultery with Bathsheba. Or Peter denying that he knew Jesus. Or Noah getting drunk and cursing his son. Or Moses killing the Egyptian who was mistreating his fellow Israelite.
Much of the New Testament is the testimony of eyewitnesses or those who talked to eyewitnesses.
(Luke 1:1-4 NIV) Many have undertaken to draw up an account of the things that have been fulfilled among us, {2} just as they were handed down to us by those who from the first were eyewitnesses and servants of the word. {3} Therefore, since I myself have carefully investigated everything from the beginning, it seemed good also to me to write an orderly account for you, most excellent Theophilus, {4} so that you may know the certainty of the things you have been taught.
(2 Peter 1:16 NIV) We did not follow cleverly invented stories when we told you about the power and coming of our Lord Jesus Christ, but we were eyewitnesses of his majesty.
Paul talks about how many people saw the risen Christ.
(1 Corinthians 15:3-8 NIV) For what I received I passed on to you as of first importance : that Christ died for our sins according to the Scriptures, {4} that he was buried, that he was raised on the third day according to the Scriptures, {5} and that he appeared to Peter, and then to the Twelve. {6} After that, he appeared to more than five hundred of the brothers at the same time, most of whom are still living, though some have fallen asleep. {7} Then he appeared to James, then to all the apostles, {8} and last of all he appeared to me also, as to one abnormally born.