Why do you act so naively?
You're probably in this forum for at least a year. So you must have seen that these countries don't openly threat Türkiye but covertly.
And how would 5th gen figters defend you from covert operations and asymmetric warfare?
Unless you plan for a direct war with Israel or Greece, there is not much use for 5th gen fighters, other than posturing.
Look how far it has gotten Iran when they attempted to get a nuke. Sometimes it’s better to stay under the radar and build your economy, attract foreign investment and entangle your economy with your neighbors, so that nobody has the interest to fight you.
In the Middle East, I think Saudi Arabia and UAE have the best strategies, as they are taking the economic, not military route.