wa'alaykumsalaam wa rahmatullahi wa barakaatouh.
The main goal of closing the masaajid is to avoid the crowd and touching each other which leads to the disease.
Having a congregational anywhere destroy the purpose.
So my advice is to avoid being in contact with anyone even though if it is for prayer.
Pray alone and avoid anyone touching you and you will get the reward of a full Jamaa'ah in shaa Allah.