Very low win percentage with black

Hi all, I have an extremely low win percentage with black only 33%. I play Caro against e4 but against d4 I don't know what to play. I don't really understand what to do if I play king indian, I also don't know how to play QGD and while I feel I can play Albin Countergambit I feel I need to learn a more solid opening. 

Could anybody please look through my black games and identify what I do wrong? I'm really struggling with my own analysis.

What's your win-loss-draw % for black and white?

33% win for black might be OK or better than expected. But without the context of your entire win-loss-draw percentage for both colors it's not a meaningful number.

In last 30 days rapid, 49-50 white and 35-12-53 with black 

does it matter about perents on wining?

@1

"I have an extremely low win percentage with black" ++ It is normal to score better with white

"I play Caro against e4" ++ Good.

"against d4 I don't know what to play"
++ Pick a defense and then stick to it so as to accumulate experience.

"I don't really understand what to do if I play king indian" ++ Attack the white king.

"I also don't know how to play QGD" ++ It is more positional

"I feel I can play Albin Countergambit" ++ Not solid

"I need to learn a more solid opening." ++ Queen's Gambit Declined or Slav Defense are solid.

"what I do wrong?" ++ Tactical errors.

I wonder how someone gets to 1800 in rapid and 1500 in blitz and bullet without knowing what to do against 1.d4.

@6

"I don't really understand what to do if I play king indian" ++ Attack the white king.
'Not a clear answer.'
++ A more elaborate answer:
Pressure central pawn d4 with ...g6, ...Bg7, ...e5, ...Nc6 so as to compel d5.
Then attack central pawn e4 with ...f5 and ...Nf6 so as to compel f3.
Then advance ...f4 and start an attack on the white king with ...g5, ...g4.
Here is an example, annotated by Fischer himself:
https://www.chessgames.com/perl/chessgame?gid=1044673 

"I also don't know how to play QGD" ++ It is more positional
'Doesn’t Help'
It is more positional and less straightforward to understand.
Here is an example:
https://www.chessgames.com/perl/chessgame?gid=1937841 

"what I do wrong?" ++ Tactical errors.
'It’s often tactics but not always, a lot of the time the person asking doesn’t realize a gap in their knowledge of chess or what they can do to fix such things'
++ Play and analyse lost games. Identify the decisive error. It is nearly always a tactical error. How did you arrive at playing the error?
What was the right move?
Did you consider the right move?
Why did you play the error?
How much time did you spend on the error?
How much time did you have available? 

To be fair, he may be able to get away with stuff against lower rated opponents, but when someone at or above his level plays it (and is at least somewhat competent), he no longer gets away with poor play.