Yes, and they are usually easy to find once you know the layers to look in. Nearly every sizable city has diaspora and nationality-based associations, from formal cultural organizations that run festival celebrations and language schools for kids, to informal social-media groups organizing weekend meetups, sports matches, and food events. Embassies and consulates often keep lists of registered community associations.
Online, the action concentrates in city-plus-nationality groups on the big social platforms and messaging apps, where you will find everything from festival announcements to food services and housing leads. Professional diaspora networks exist too, and can be genuinely useful for careers, not just nostalgia.
Virtual connection back home has its own ecosystem now: village and alumni groups on messaging apps, streamed family functions, online game nights across time zones. The one caution long-term expats offer is balance. These communities are a lifeline in the first year, but treating them as your only social world can delay local integration, so pair them with at least one local-facing activity.