this is the second sac...the first one was bad, so then i put tons of time and effort into this one, and my marks rose by literally 1%.
Gatecrashing once again.Of course, you'll all worry about SAC and marks. There is no way you'll ever feel great about getting a "bad" score when you expected much higher. That's the harsh reality. I can't sugar coat that for you, sadly.
On the other hand, do realise that even if you feel several SACs were horrible, your mark will redeem itself. Have faith, keep persisting and one day, you'll be rewarded. I, myself, was in the same scenario about EL last year. My average SAC mark was low, my exam predicted to be worse. I expected SS of 25. I ended up getting an SS quit a bit higher than that prediction. It may not have been 40+, but for a predicted 25, that was a massive jump on the bell curve.
SACs aren't everything. It is certainly not a be all and end all. Heck, if you thought you did horrendously, it's likely others did too and the SAC itself is subject to scaling anyway (probably get a result higher than you got). It wouldn't be worth you stressing and feeling bad about getting X score in Y SAC, when you should be concentrating on the next one (just as you did the last one). Just keep persevering.
I reference this again: "you can never change the past, but you can always change the future". That's the adage that you should believe. Because only you can believe in yourself to have the confidence to pull out the score you truly desire. (Believing in yourself may sound like a cliche from a children's movie, but you need to feel as if you have the capability to do well in order to actually succeed.) Everyone has the potential to do well. They just have to keep chipping at the rock to uncover the true treasure underneath. And right now, you're halfway there. Just keep going.
tl;dr: As one fish once said: "Just keep swimming" and you'll eventually succeed.