Something similar to location-allocation analysis layer from the Network Analyst toolbar in ARC Map.
Check this plugin for QGIS 3.X: https://root676.github.io/
Also, check this answer in stackexchange: https://gis.stackexchange.com/questions/305729/seeking-vehicle-routing-problem-and-location-allocation-tool-in-qgis
It is written in Italian but is appropriate: https://pigrecoinfinito.wordpress.com/2016/01/06/qgis-localizzazione-ottimale/
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