Agree with the premise, though if you look at the actual outcomes, you'll see why:
1st turnover: we took over at LAC 34, kicked a FG. So we got 3 points off turnover
2nd turnover: we took over at LAC 47 with 26 seconds left in the half. Not a reasonable amount of time to mount a TD drive. Three points would have been good outcome, but we took a sack and got nothing.
3rd turnover: we took over at our own 23 yard line. Meaning we still needed to get like 40+ yards to get in FG range. Starting at your own 23 is basically the equivalent of where you would start on a punt or kickoff. You should view this turnover as a "win" in stopping the Chargers from getting any points more-so than how we responded to it.
So on three turnovers, you basically got two where you had favorable field position, and you got a FG off one of them. A FG would have been realistic on the other one, but a TD really isn't.
I think the whole "we needed to capitalize off turnovers" thing was a bit overblown in this particular game. One turnover literally ended the half, a second was very near the end of the half, and the third was fairly deep in our own territory.