This question makes two assumptions: first, that there is more conflict among Muslims than among followers of other religions, and, second, that conflicts involving Muslims result primarily from their religion.
The first assumption is a false perception. Of the fifty Muslim-majority countries, the vast majority are at peace. Furthermore, many countries with non-Muslim majorities are involved in conflict. The United States, for instance, a Christian-majority country, is the world’s largest arms exporter and is involved currently in several armed conflicts and was previously involved in a number of conflicts, most famous among them the Vietnam War. The two largest world wars in history were fought mostly between Christian-majority countries (i.e., World Wars I and II).
The second assumption is likewise misleading. While religion is sometimes invoked by parties to support a war, religion is at most one factor among many in producing conflict, and usually not the most important one. Economic and political issues are generally the underlying causes behind most conflicts, including those involving Muslims.
Additionally, in many of these conflicts Muslims are the victims rather than the perpetrators of violence and conflict. Some current examples include: Myanmar, where close to a million Rohingya Muslims have been persecuted and driven from their homes by the Burmese army and militants in what has been called a genocide; in China, where one million Uighur Muslims have been detained in concentration camps; in Kashmir where a brutal crack-down has resulted in the oppression of all its Muslim residents following decades of repression; and ongoing conflicts over land and rights in Palestine. This has also been the case in previous conflicts in Iraq, Chechnya, Afghanistan, and Bosnia, where others instigated conflict to the great detriment, loss of lives, destruction, and suffering of the Muslims living in those countries.