How and why did the people lose interest in the crusades?

People gradually lost interest in the Crusades due to a combination of factors, including the prolonged nature of the campaigns, high financial costs, and the failure to achieve significant victories. As the initial fervor waned, disillusionment set in due to the harsh realities of warfare, such as loss of life and resources. Additionally, shifting political and economic priorities in Europe, along with the rise of local conflicts and the focus on nation-building, diverted attention away from distant religious wars. By the late 13th century, the Crusades were increasingly seen as futile endeavors.