Opel Insignia 2012 Cooling System Issues Cost Me a Lot and Remain Unresolved

I have a 2012 Opel Insignia, and I keep running into ongoing problems with the cooling system, making it really difficult to use the car without frequent visits to the mechanic. It appears that operating the vehicle with antifreeze is no longer a practical option. I’ve topped off the antifreeze three times now, but every time something else goes awry—whether it’s the clip on the hose breaking, the O-ring giving out, or the tank getting damaged. After replacing all the faulty parts, first with aftermarket options and then with original ones, I ended up spending about ₺80,000-₺90,000, but unfortunately, the issue is still not resolved. Although the vehicle provides excellent comfort and robust construction, the problems with the cooling system have made my experience with it quite frustrating. I truly regret my decision to go with Opel.