The issues you're experiencing are things we're all going through. You're not downplaying at all. Most of his problems will probably get fixed. The same thing happened in MKX too. In order to get good with Cage for the time being is to keep grinding out matches with him. Abuse F4 and his pokes a lot. His pokes are very good and they tend to piss the other player off into making mistakes. Use Cage more than your other characters too. I found that, in fighting games, it's much better to master 2 or 3 characters than to try and learn the whole cast. It's better for your muscle memory.Its funny watching these "good" players never get d2 out of 121, f3, f2 yet all ive played are mashers and nothing I can do about it, oh wait that's right I have f4 lol.
Not to mention ive watched my whole 121 string whiff on block, f4 amp fireballs whiffing on block. Watching as I get kb punish for 300 plus damage yet here I am maybe doing 290 if I hit with a jump in followed by another high 34 this is very tiresome not having access to half the game.
Nothing worse than getting mixed and guessing correctly blocking perfectly just to get d2 kb.
Call me a downplaying asshole whatever but this is rediculous. I know the next response " just play someone else", guess I'm a glutton for punishment using my fav character since I was 6. Even had a 3 to 1 win ratio as a kenjitsu kenshi player in mix guess I'm getting old now lol.
Sorry for the rant just frustrated honestly.
Cage is good, and his F3 is amazing, it's just that most of his moves are high for no reason. Meanwhile, certain characters have every tool for every situation and then some. Look back through the pages in this thread, there's plenty of advice.