On sin
What is sin, really?
It is behaving in a way that upsets your community. Using illegal drugs, drinking too much booze, having too much sex, stealing, or un-needed physical violence. You can just be socially awkward, but I don’t think that is really a sin.
I think it boils down to what damages your body or someone else without reason. I still listen to the St. Lawrence Basilica Mass online from Asheville because I like the pastor, even though I have left the city and because my local church has not apparently re-opened yet from the virus.