I don't know if it's bad but it's odd and isn't played mostly. Mostly that means there is some flaw with it.
I need help.....

Well you surrendered the central white squares right away which seems pretty bad to me. When you resolve central tension like you did here with c6, it makes your opponents life a little easier because he doesn't have to always think about it.
Tension = uncertainty.

Yes, it's bad. You move 2.c4 in order to undermine his center pawn on d5; then you move it again to release the pressure!
Besides, he's played 2...Nf6 (1.d4 d5 2.c4 Nf6). That's dubious as well, since you can take advantage with 3.cxd5 Nxd5 4.Nf3 (to prevent ...e5) followed by 5.e4, with a nice stable pawn center. Great position to attack from.

yes, it's bad because the pawn advance wastes tempo(a move) and that pawn can be easily taken away, doing this, means that you have to support it otherwise, it'd be unprotected, for the central pawnshould not be moved away.
the good thing is that it can stop the knight to advancingbut the knight has other squares to move any way, so practically you lose a turn, and your winning side soon turns to a losing side, i would recomend you to take out the queen's knight for a further more pressure attack

Keep the c4 pawn there for all the reasons above. With the pawn on c4, it pressures the d5 pawn, which is the best Black pawn on the board at the time. It also kills any prospects the c1 bishop might have on the queenside and, perhaps most importantly, it gives Black a target to undermine when, normally, he should be defending and aiming for equality with a central pawn thrust.
Try 3Nc3 instead. It brings that piece to its best square, puts further pressure on that crucial Black stronghold on d5 and will generally force Black to make a second pawn move, which gives you a target to aim at. Don't worry about losing the c4 pawn in the early stages of the game; you generally will get it back easily or Black will stuff his position up trying to hold on to it. In addition, that d5 pawn is far more important than your c pawn.
Yeah it's bad. I got into similar pawn structures early on, because space is good, right?
Well you have to be able to something with the space, with the pawns locked up like that Black doesn't have to worry about too much on the Kingside or Center. He should be able to develop rather freely, albeit with a bit of a space disadvantage, but your pawns are so far up the board and your pieces not developed Black shouldn't have too much trouble attacking the pawns.

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Keep the c4 pawn there for all the reasons above. With the pawn on c4, it pressures the d5 pawn, which is the best Black pawn on the board at the time. It also kills any prospects the c1 bishop might have on the queenside and, perhaps most importantly, it gives Black a target to undermine when, normally, he should be defending and aiming for equality with a central pawn thrust.
Try 3Nc3 instead. It brings that piece to its best square, puts further pressure on that crucial Black stronghold on d5 and will generally force Black to make a second pawn move, which gives you a target to aim at. Don't worry about losing the c4 pawn in the early stages of the game; you generally will get it back easily or Black will stuff his position up trying to hold on to it. In addition, that d5 pawn is far more important than your c pawn.
Which is a more effective gambit to play? ive only played queens gambit but i mixed it up a bit to something completely new