The average weekly civilian death-toll in Mosul, Iraq is more than double what it was in Aleppo, Syria. Think about that.
All the Aleppo hysteria in Western news media was a deliberate propaganda diversion and distraction from the much worst destruction and civilian death occurring in Mosul.
Syria and Russia were praised and celebrated in the streets by Aleppo civilians, as the extremists were defeated and pushed out. Is anybody in Mosul celebrating the USA-coalition's slaughter of the Iraqi people? I haven't heard of it.
Let's also remember that the extremists being fought in both Syria and Iraq were spawned off of the USA's own actions, and were / are supplied, trained, and encouraged by the USA. The Middle East is a mess because the USA wanted it to be a mess. And, civilians died in Syria, and Iraq, because the USA created the groups, divisions, and conflicts that would cause them to be killed at a large scale.