NATO lost its credibility when they didn't back Turkey after a Russian fighter jet violated Turkish airspace and was subsequently shot down.

Or when they pulled out of Afghanistan and the world saw 20 years of occupation unravel within a couple weeks.

Or when they went ahead and destroyed multiple countries without much thought.

At this point, NATO is just a bully with a big stick, whacking people then scurrying back across the pond. As well as a marketplace to force allies to buy and get locked in to the American arms industry.

NATO did back Turkey, I don't know why its widespread narrative in Turkey but NATO provided both political support and air defence support. You can check the news from that time.

Do you think that Russia didn't do anything to Turkey because they were afraid of Turkey? Turkey is a powerful country with strong and high quality military but no one is going to defeat Russia without a logistical and military support to match theirs. Ukraine is doing amazing but its thanks to the NATO.

>they didn't back Turkey after a Russian fighter jet violated Turkish airspace

Did Turkey ask NATO for help?