Does reaching the permissible through an impermissible means make the permissible forbidden?

The two examples mentioned do not fall under the category of using a forbidden means. In the first example, if the job opportunity comes through the mentioned person without effort, it does not constitute intercession [tawassul]. If you exert effort to reach out, this is not a forbidden form of intercession, for the prohibition lies in the person's action itself, not in your attainment of a lawful job. In the second example, the mere occurrence of an idea in the mind due to watching movies and TV series does not mean intercession through them unless the viewing was for this specific purpose. Nevertheless, it is not forbidden to benefit from a permissible idea, even if you sinned by using a forbidden means. Attaining a permissible matter through a forbidden means does not necessitate its prohibition.