I wouldn't do the Portugal option unless you have a path toward it growing in the future. Otherwise you may find yourself at age 46, making 1500 euros a month, and basically unable to actually set yourself up for a life.

Maybe that means getting citizenship in 5-7 years, then moving elsewhere in the EU. Maybe it means something else.

In your situation, I would probably stay in Turkey and build up a career / wealth, with the specific point of picking something that's portable. Not sure if Turkish CPA requirements are portable, or how well they convert to EU/USA/etc. standards. Then in 5-10 years, think about moving to the West, if you still desire to do so.

The money you've invested now is a sunk cost and is irrelevant in the long term.