en.wikipedia.org
Only a few examples
1821 Greeks killed 15.000 muslim civilians
The worst massacre happened in Tripolitsa, some 8,000 Muslims and Jews died
Russo-Turkish War (1877–78)
BULGARIA
1,5 million Muslim population of Bulgaria was gone, an estimated 200,000 muslims died
SERBIA
Size of the Muslim population drew to 130.000 from 200.000 in Serbia
BOSNIA
From 1878 until 1918, around 150,000 Bosnian Muslims departed Bosnia to Anatolia
CAUCASIA
up to 1.5 million Circassians were killed by Russians or expelled to the Middle East, especially modern-day Turkiye
BALKAN WARS
2,315,293 Muslims that lived in the areas taken from the Ottoman Empire in Europe (excluding Albania), 812,771 ended up in Turkiye
632,408 died, and 870,114 remained
World War I and the Turkish War of Independence
600,000 Muslim Turks and Kurds were killed by Russian troops and Armenian irregulars
en.wikipedia.org