I was just about to say what Facite said - if i cant make it to mass i usually try and read the readings and say the rosary. I usually go to benediction afterwards to make up for it but obviously in your situation that would not be possible.
I have a lovely prayer you might like to say if you cant make it to mass. Although you cant go, your guardian angel can at your request -but this is only if you really cant make it! If you could go and you choose not to then i dont think this prayer would mean as much.
"**Send your Angel to Holy Mass
O holy Angel, at my side,
Go to the church for me,
Kneel in my place, at holy Mass,
Where I desire to be.
At Offertory, in my stead,
take all i am and own
and place it as a sacrifice
upon the Altar Throne.
At holy Consecration’s bell
adore with seraph’s love,
My Jesus, hidden in the Host,
Come down from heaven above.
And when the priest communion takes,
Oh, bring my Lord to me,
That His sweet Heart may rest on mine,
And I His temple be.**
You know to make up for it you can always go to morning or afternoon mass the next day and resolve to always try to make it to mass on Sunday if you are able to
God Bless and know that God would be understanding to your situation!