DTV offers Sunday Ticket online if you can't get DTV in your building (I, like you, can't get it in my condo because the building will not put up a DTV dish, just a Dish Network dish - okaaaay).
I've used it for the past three years now and mostly love it. Just make sure you have speedy Internet, or get ready to yell at the computer / TV!
You can also upgrade from just laptop, phone and tablet to XBO / PS4 for like an extra $100 per year (crazy, IMO since that used to be included).
Sign up for info here: https://www.directv.com/DTVAPP/nflws/