WHy it did not suit you. You can try Neeli it is an substitute of Blue Sapphire. The other stone as per your horoscope you can wear is Diamond or White Sapphire , however as Venus is debilitated, you cannot wear it as well.
If for some reason the Saturn stone does not suit you, then you should avoid wearing stone. Do the remedies which Shri K.Umamaheswara rao has suggested above and you will see a big improvement.