Indiana at Cavs, 11/7, Cavs 28 FTs attempted, Pacers 11 FTs attempted, Cavs win
Denver at Cavs, 11/12, Cavs 12 FTs attempted, Nuggets 24 FTs attempted, Cavs win
Cavs at Nets, 11/18, Cavs 40 FTs attempted, Nets 30 FTs attempted, Cavs win
Warriors at Cavs, 11/28, Cavs 23 FTs attempted, Warriors 30 FTs attempted, Cavs win
Knicks at Cavs, 12/3, Cavs 30 FTs attempted, Knicks 10 FTs attempted, Cavs win
Raptors at Cavs,12/9, Cavs 23 FTs attempted, Raptors 30 FTs attempted, Cavs win
Cavs at Sixers, 12/10, Cavs 18 FTs attempted, Sixers 32 FTs attempted, Cavs win
Cavs at Hawks 12/13, Cavs 23 FTs attempted, Hawks 39 FTs attempted, Cavs lose
Other games played by the Cavs this year didn't have as big a disparity as games above.
The Cavs have overcome FTs deficits before to win. It's just more noticeable tonight because they lost.
From the stats above, the Cavs also have had the advantage in this category in various home games. I don't think it was the refs' fault that the Knicks and Pacers lost their games in Cleveland.