I think you have to be evil to become a billionaire. Nobody by themselves contributes something to society that is worth billions. So they are taking more than they contribute and are apparently willing to do so and disadvantage other people. This is evil. That is why there are no good billionaires.

Also, if by some extreme coincidence you become a billionaire by accident and if you are a good person, you would give it away for the benefit of society. So then you would not be a billionaire anymore.

No, most men are not murderers and will not just kill you. People like your father and brother are exceptions in how they behave. There are kind people out there who would never do a thing like that.

In some cases, people who are like your father or brother might feel that you are traumatised and used to that behaviour. So, if you encounter anyone acting like them, leave immediately. Kind people might feel not as familiar, but there are many of them and they might even help or protect you.

I feel for you. You deserve kindness and care. It is a good thing that you are a kind person and that you remained like that even with all you have been through. I hope you find an environment with people who are also like that where you can heal.

The way your family is, is not normal. And the way your life is right now, is not what life should be. And this is not your fault, but it is because of the environment you are in. And this can change.

Maybe you can get help from a domestic violence protection organisation to make sure you have a way to get away safely.

In the Netherlands you can apply to a position that is in the field you are in here: https://www.academictransfer.com/en/

For these positions, you usually get a salary for four years and you are expected to obtain your PhD within that period. It is quite competitive and there are often a lot of applicants for these positions. But if you have good grades/experience, etc, it is worth a try.