So I watched a bit of your first video. I noticed you learned how to blow up Cyrax's wake-up ragdoll. Good stuff.
However, try not to jump out of pressure. In MK9, this is a very bad habit. I noticed sometimes you pressure with Jax's standing 1. It works if your opponent likes to jump out a lot (it was catching your opponent mid air and you were converting), but players who know the match-up will be ducking against Jax and his standing 1 is a high so they'll blow it up. Abuse the F4 string against Cyrax since it doesn't whiff.
When the Cyrax player is AA'ing you with his standing 1, he's finishing his combo with a mid bomb, you need to tech roll that.
I'll have more comments when I watch more. If you ever want to play online, shoot me a PM, although I'm not sure about the quality of the our connection.