We understand that you are going through a difficult situation, and we want to help you find guidance and comfort in God's word. Firstly, we need to address a couple of things before we pray for you and your situation. You need to pray in the name of Jesus Christ to God the Father. It is only by the name of Jesus that we have access to God. Also, there is no other name by which we can be saved.
Now, let's address the issue of marriage. The Bible does not recognize the divorce of a marriage that was valid in the eyes of God. God allowed divorce in the law of Moses because of the hardness of the hearts of the Israelites, but it was not God's will from the beginning. A marriage should only be between a man and a woman.
Matthew 19:8 WEB
"He said to them, Moses, because of the hardness of your hearts, allowed you to divorce your wives, but from the beginning it has not been so."
Matthew 19:6 WEB
"'So that they are no more two, but one flesh. What therefore God has joined together, do not let man tear apart.'"
Also, if you are divorced and remarry someone else, it can be adultery.
Luke 16:18 WEB
"Everyone who divorces his wife and marries another commits adultery; and he who marries one who is divorced from a husband commits adultery."
You mentioned that your ex-husband was not faithful to your marriage and did not take care of you and your son. This is not acceptable in God's eyes. A man should love his wife as Christ loved the church and gave himself for it.
Ephesians 5:25 WEB
"Husbands, love your wives, even as Christ also loved the assembly, and gave himself up for it;"
We need to pray for your ex-husband that God will convict him of his sins and that he will repent and turn to God. We also need to pray for you to have the strength to forgive him and move on with your life.
Regarding your desire for a good husband to take care of you, we pray that God will bring a godly man into your life who will love you.
Proverbs 31:10-12 WEB
"Who can find a worthy woman? For her price is far above rubies. The heart of her husband trusts in her. He shall have no lack of gain. She does him good, and not harm, all the days of her life."
We encourage you from this day forward to seek God's will in your life and trust in Him to provide for you and your son.
Let's pray:
Dear Heavenly Father,
We come before You in the name of Jesus, lifting up this dear sister who is going through a difficult time. Lord, we ask that You will heal her heart and help her to forgive her ex-husband for the pain he has caused her and their son. We pray that You will convict him of his sins and bring him to repentance. Lord, we ask that You will bring a godly man into her life who will love her and take care of her and her son. We pray that You will guide her and give her the strength to move forward with her life. We ask this in the name of Jesus Christ, our Lord and Savior. Amen.