Does studying international law in London contradict Islamic Sharia, given the belief that Islamic rulings are correct and that European and international law are against Islam?

It is permissible to study man-made laws for a valid purpose, such as demonstrating the superiority of Islamic law and highlighting the contradictions and injustices within man-made laws, or to benefit from them in ways that do not contradict the Sharia (definition). It is stipulated that this study should not distract the Muslim from learning the individual obligations (furood al-ayn) or performing their duties, while still disliking governance by laws that contradict the Sharia. The questioner should acquire a substantial share of Islamic knowledge, especially in aspects related to their field of study.