Someone please help me ! why was Constantinople often under attack during the crusades (wars between Christians and muslims)?

i need to turn this asap, please and tysm ! :)

The Crusades were a series of religious wars between Christians and Muslims started primarily to secure control of holy sites considered sacred by both groups. In all, eight major Crusade expeditions occurred between 1096 and 1291. The bloody, violent and often ruthless conflicts propelled the status of European Christians, making them major players in the fight for land in the Middle East.

Explanation:

basta ayan yun sagot nyan

yan din sagot ko ih hahahahah