What caused the collapse of the Arab Caliphate?

At the beginning of its existence and development, the Arab Caliphate was more of a jihadist state. The main goal was to spread Islam throughout the world as strongly and far away as possible. However, over time, formidable forces were found that were able to stop the spread of the Arab armies. First of all, these are the Chinese, Franks and Byzantines. After that, the Arabs were forced to gradually move to internal development. Neighbors, raids of nomads, dispersion of forces over the territory of a huge state, difficulties in managing territories and internal intrigues of governors in the provinces constantly began to interfere with this. The Turkic invasion was an especially strong blow.