All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
The father is obligated to spend on his young children who have no money on a reasonable basis, and there is a difference of opinion regarding the ruling on spending on an adult child who is able to earn; the view of the majority of the scholars is that he is not obligated to spend on him.
The evidence from the Quran that it is obligatory to spend on the children in reasonable terms, is the Saying of Allah (which means): {Upon the father is the mothers' provision and their clothing according to what is acceptable.} [Quran 2:233]
Therefore, if your father was referring to this verse and the like regarding the obligation of spending in reasonable terms, which is the sufficient amount in food, drink, clothing and housing, then he is right in that.
Nonetheless, the father should spend on his wife and his children according to what Allah has provided for him, as Allah Say (which means): {Let a man of wealth spend from his wealth, and he whose provision is restricted - let him spend from what Allah has given him. Allah does not charge a soul except [according to] what He has given it. Allah will bring about, after hardship, ease.} [Quran 65:7]
If the child needs something from his father that is not obligatory upon him, then the child should be gentle in his request for that from his father. He may seek the help of someone who can convince him, such as the mother, or other relatives whom he might listen to.
You should know that the father is mostly keen on achieving what is in the interest of his son and that he may prevent him from some of his desires – while he loves him – for his child’s benefit so that he does not become accustomed to extravagance and overindulgence, or leading a foolish life for example, or so that he does not grow up being pampered, or grows up in unemployment and remains without earning while he is able to earn, and other good objectives.
If you can find work to suffice yourself and save some money out of it to buy some of your needs, then do so.
Our advice to you is to take it easy and not amplify the issue to the extent of thinking about suicide, as it is a grave and very serious crime that a believer does not think of, let alone committing it. Because if he commits suicide, he moves from an illusive misery to a real misery. Thabit ibn adh-Dhah-Hak narrated that the Prophet said: “Whoever kills himself with an iron weapon, he will be punished with it in Hellfire.” [Al-Bukhari and Muslim]
For more benefit on the prohibition of committing suicide, please refer to Fatawa 84296, 96097, 22853, 377509, 34194 and 223189.
Allah Knows best.