How can one reconcile the demands of arduous work, which may affect commitment to worship and threaten one with falling into temptation, with preserving one's religion and avoiding prohibitions, especially under circumstances of expatriation and instability?

The matters mentioned—abandoning congregational prayer, mixing with two girls and the resulting flirtations, not lowering the gaze, a devilish love, and a danger threatening one's religion—all necessitate that you abandon this job and keep away from it. For whoever gives up something for the sake of Allah, Allah will compensate him with something better. You can return to righteous companionship, and if you find a means to marry, do not hesitate, for it is more effective in lowering the gaze and protecting one's chastity.