This article examines pandemic governance towards migrant communities in Germany in the context of mobilisation and demobilisation of state–society relations during the COVID-19 crisis. By studying how informality is reproduced in social practices and community networks as a response to top-down governance practices in the case of Assyrians – a quintessential diaspora community that settled in Germany through various migratory waves starting from the 1960s – this article aims to explore the bottom-up dynamics of governance practices among migrant communities. The study identifies three key themes for studying bottom-up dynamics of governance: informality embedded in everyday practices in response to formal governance, particularly vaccine policies; the existence of alternative epistemologies based on mistrust towards authorities, manifested in dual narratives; and the articulation of migrant agency in navigating top-down structures. Adopting a grounded theory approach, the study utilises theoretical sampling. Data were collected from various sources, including reports, newspaper articles, official statements and press releases from migrant organisations, alongside interviews with key migrant stakeholders.