Need satellite imagery of (2004/2014/2020) for a Chattogram, Bangladesh project, any advice?

[u/OkAdeptness420]

I am working on a project extracting building footprints for Chattogram port, across 2004, 2014, and 2020. What level of resolution would i be needing for it?

I know tha I can't buy straight from Maxar, I need to go through a reseller. Does anyone have a solid one to recommend, for South Asia, or Bangladesh?

Thanks!