You posted this question in a forum for the US, so don’t expect too many answers here. Maybe try to get answers on pprune.org.
I am not sure why you spent all this money for the ATP, having no right to live and work in the EU? Unless you get married to an EU citizen your chances are close to zero to find employment in the EU. You mention family reasons for your training in the Netherlands? If you have family there, maybe they can assist you in getting the right to work and live in the EU. Unfortunately I don’t know any other way to be employed in any EU company unless you have this right. Maybe it’s worth to look at any Turkish company since they are not part of the EU. Best of luck!