Our Prophet (saas) also communicated Islam to those who were not dressed Islamically. Speaking to non-mahram in an open place, it is not haram. It is not halwat. If we leave models, young men and women who live un-Islamic life, how can we save them from kuffar? so several examples that you set, such as stealing and giving sadaqah,.. these examples are not proportional to this case inshaAllah u Teala