Fortunately you have the luxury of being young and having choices:
1. Try Lufthansa Flight Academy, should you not pass the assessments,
2. F1/J1 Flight training in the US and working ( as an instructor ) till you have your ATP (2-2.5 years)
3. Back to Europe for EASA conversions (6-9 months)
4. Look for jobs worldwide with both EASA and FAA certificates.
5. In 12-15 years with 7-9000 hrs turbojet and PIC time back to the US ( should you so desire) for another 20-25 year career with one of the Major airlines.
Those are some very good prospects.
Thats a plan A,B,C and D