Is money earned from forex trading halal or haram, especially after receiving a bonus conditioned on trading and realizing profits from it, knowing that there were swaps that were later canceled, and the bonus and part of the profits were deducted upon withdrawal? And is it permissible to donate this money to purify it?

The bonus offered by trading companies to their clients is impermissible. What you earned from it is also not permissible. However, if you were unaware of the prohibition, some scholars are of the view that it is permissible to benefit from it and that there is no obligation to dispose of it, based on Allah’s saying: {So whoever receives an admonition from his Lord and desists, he may have what has already passed, and his affair is left to Allah.}