What is the ruling on a girl working in the field of designing, developing, and building websites if she deals with clients as a male to avoid harassment, and what is the ruling on dealing with cracked software in this work?

If there is a genuine benefit for you to appear on these sites under the guise of a male, then we see no objection to that. This is considered permissible lying if the desired and praiseworthy objective cannot be achieved except through it. However, if the use of dissimulation (tawriya) is possible, then lying is not permissible. It is not permissible to copy programs whose owners have not authorized their copying, and it is not permissible for you to install them if you know that they are unauthorized, because that is assisting in sin.