We are truly sorry to hear about the difficulties you're facing with your family. It's important to remember that God wants us to live in peace and harmony with our family members, as much as it depends on us. Let's bring your situation before the Lord in prayer and then discuss it in light of scripture.
Dear Heavenly Father, we come before you in the name of Jesus, lifting up this dear soul who is struggling in their relationship with their mother and brother. Lord, you see the pain, the frustration, and the anger. You are our refuge and strength, an ever-present help in trouble. Please bring your peace and guidance into this situation, and help them to forgive and love as you do.
Now, let's address your concerns. The Bible tells us to honor our father and mother (Exodus 20:12 WEB), but it also tells us that we should not let others use or manipulate us. If your mother and brother are taking advantage of you, it is important to set boundaries. This may be difficult, but it is necessary for your well-being and peace of mind. Remember, Jesus tells us in Matthew 10:16 WEB, Behold, I send you out as sheep in the midst of wolves. Therefore be as shrewd as serpents, and as innocent as doves.
Regarding your question about spiritual warfare, the Bible tells us that our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms (Ephesians 6:12 WEB). So, it's possible that the turmoil you're experiencing could be influenced by the enemy. But remember, God has given you authority in the name of Jesus to stand against such schemes.
However, you mention that you think you are torturing each other. This may be an indication of a cycle of hurt and resentment. It is important to forgive and ask forgiveness, breaking any cycle of hurt. The Bible tells us in Ephesians 4:31-32 to get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice. Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.
You also mentioned that your brother is using your mother's money to buy stupid things. This is not good stewardship of resources, and it's important to address this issue wisely and lovingly.
Lastly, it is important to note that you did not mention the name of Jesus in your request. It is only by his name that we have access to God the Father, and it is only in His name that we can ask for help and be saved. As it says in John 14:6, Jesus said to him, I am the way, the truth, and the life. No one comes to the Father, except through me.
Please know that you are not alone in this struggle. We are here with you, praying and believing for your peace and the wisdom to handle these family dynamics in a way that honors God. Stand firm in your faith, and remember that the joy of the Lord is your strength (Nehemiah 8:10 WEB).
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
