Is it true that the muslims around the world desire/ calling for the re-establishment of the Khilafah again?

There are many Muslims who believe that the re-establishment of a caliphate, or a single unified Muslim state governed by Islamic law, would be desirable. However, it is important to note that there is a wide range of opinions among Muslims on this issue, and not all Muslims agree that the re-establishment of a caliphate is necessary or desirable. Some Muslims believe that the concept of a caliphate is no longer relevant in the modern world, while others believe that the idea of a caliphate is not compatible with the principles of democracy and pluralism. There is no single "Muslim view" on the re-establishment of a caliphate, as Muslims come from a diverse range of cultures and have a variety of political beliefs and ideologies.  There have been a few studies that have attempted to measure attitudes towards the caliphate among Muslims. For example, a 2012 survey conducted by the Pew Research Center found that a majority of Muslims in several countries in the Middle East and North Africa believed that Islam was the only religion that could lead to a good life, and that the re-establishment of a caliphate was desirable. However, it is important to note that this survey was conducted in a specific region and may not be representative of the views of Muslims globally.  It is also worth noting that the idea of a caliphate is not a new concept, and it has a long history within Islam. The concept of a caliphate has been debated by Muslim scholars and theologians for centuries, a widespread consensus existing throughout Muslim history; however since the Ottoman caliphate there is no longer a consensus among Muslims on the role and function of a caliphate in the modern world.