you are from Germany and you do know that for long time Turks had having problems in the border for many reasons. that's why Turkiye - hungary, serbia, bulgaria etc, having Turkish police abroad to prevent issues. Which the news article you give also states .
"Turkish security forces have so far contacted over 160,000 Turks and sought solutions to their problems, according to the daily." so next time when you having issues, you could grab some Turkish police help in the region.
Türkiye having business in the region is very important, especially for truck drivers, that's why Türkiye try to give more assistant to Turkish citizens and border regions.
As for latest question about eastern border. Usa having 3,111 km border with Mexico it estimated 11 million illegal people living in USa. And a thousand of monthly entry . So you think that is an easy job ? Even USA having hard time .
https://cis.org/Report/Estimating-Illegal-Immigrant-Population-Using-Current-Population-Survey
Last week, Italy announced an emergency state because of unstoppable illegal entry . UK island country having problems of thousand of illegal immigrant. There are no numbers of it.
as for Türkiye borders with : Armenia 328 km, İran: 560km Iraq 384 km , Syria : 911 km. and it's not that easy part of the Turkiye. Mountainous and easy findable alternative easy. There is no cure for spider to entering your house.
you do make necessary prevention and also internal capturing and returning. i think you need to look at the bigger picture.