It is possible to praise and pray to God whether at home alone or with hundreds of other people. God is not restricted to buildings. But at the present time churches are closed for corporate worship. This is a loss.
There is a move to open churches during this lockdown for communal worship. Maybe we could write or contact our local Members of Parliament to urge for the opening of churches. If we don’t ask, we won’t get. Every contact is counted. This is something we can all do.