I’ve looked at all of the sources you provide, and they all point out the fact that countries experience bad outsomes after an IMF intervention, which nobody’s disputed. My argument is that countries in similar dire straights will experience even worse outcomes if there is no such intervention. As an example, I could name Venezuela, which experienced an extreme increase in child mortality, your favored metric, after leaving the IMF. The root cause is economic distress, not the IMF intervention.
Minimizing the negative effects of government failure is absolutely worth examining. Identifying the mistakes made by the IMF in past interventions is a noble goal. But we should not blame international organizations when poor governance causes countries to fail.