I wanted to start another test but now I don't have any "unspent transaction" left over.
Only little 0.09$ Transactions but the fee is already higher.
Is there no way for me to send money now?

Sorry - you are out of money now. Get some more.

However, you should be very happy your lesson on change addresses only cost you .0049. I can tell you I suffered more than 10 times as much damage learning about change address and I consider myself lucky in view of the mistakes others have made!!! BIG time losses have occurred here. You are the big winner if your lesson only cost .0049.
Very cheap schooling. Wish my college was $4.50