Guys I got it! 

I saw this Video:
https://www.youtube.com/watch?v=TevLN_k-GWA

and importet the key into Electrum!

Thanks for the help and thanks to @twister !

Okay.. I'm now registered at Coinbase but i dont know how to export the private key..

I dont know how to rebroadcast, all i did now was to copy and paste the thinks who where entcoded etc. and type send it back to network but it says:
There was an error pushing your transaction to network!
Did you sign your transaction? Is this double spend? Have you already sent this transaction?

And the other site says:
Error sending transaction: transaction already in pool.

Can anyone help?

Yes i saw that too, but in my program (Bitcoin Core) it says that i dont have bitcoins and I tried to make again an payment with very low budget but I can't it says i dont have enough bitcoins... I cant understand that. I uninstalled the programm and reset everything but not the wallet.ini (or some that)..

Wallet:

It says:
Fee is too low / Not sufficient priority

And at the pictures i show that the btc are send but not confirmed (bestätigt) and the second that Blockchain dont see any unconfirmed transactions at my adress

Hello, my transaction is 2 days old now and i cant do anything to fix it. I contacted the support where I send the Bitcoins but they didnt got anything and blockchain says that no tansaction is unconfirmed. The transaction is bugged or something I dont know. I send it without fees I think im not sure, I thought that if I type send without fees means that the adress who get the btc must pay the fees.. Im not good in english so don't hate my speech im working on it I need really help on this problem, here is a picture about it (in German):