Ok, I have a problem with the whiff cancel combo. I start the 2c 5c 2c then I hit 2a using both whiff cancel and connecting 2a. I tried both ways. After the 2c 5c 2c ( whiff 2a ), I have to hit the opponent with the 2a after the first one misses, so I can 2c right after, which makes the opponent flip into invincible frames ( because the combo ended, which doesn't allow me to reset the combo even with whiff 2a ). Now the other way is to 2a hitting them the first try, which has an extremely awkward timing, and even if it hits, it hits them back up, which brings me back to square 1 again. Also that combo is only good as a start up combo, and not good if you were in a combo already, because no matter what, it wont allow me to do the last C if I start the combo with a 5a 5a, because any other move will then change the string of the combo, making a 2nd 2c impossible, making the opponent able to recover. So basically, I would have to change it to 5a 5a 2c 5c 6c instead of 2c again. I've tried this a number of times thoroughly with no success. Also 2c 5c 2c is risky during a match because it's almost impossible to perform under pressure unless your opponent is slow ( no one is slower than tohno akiha ). You would have to do it out of a pressure shield, timing the first move just right; and even then, you could only hit that combo at a certain speed, because with no stall would make that combo impossible. Also I noticed I got worse learning these skills lol. Now that I know what I am doing, it's no longer easy to beat the computer on level 5 difficulty. Then again, I remember my friend once saying last year, "when you learn techskills, you will get worse before you can get better".
Edit: Ok 5a 5a 2c 5c 2c can be done, but the timing sucks and a combo like this would take months of practice before using it in a actual game. But then again, I think it would take atleast 6 months of practice minimum ( maybe even a year ), before even playing friendlies against anyone. I think my friend said that he practiced at smash bros melee for a year before even going to tournaments.