People are going to tell you to find better tanks.

No matter what you do or say or how much you trust your tank.
It's his fault.

They system could never be faulty. Square-Enix has such an outstanding reputation for perfect game balance, customer service and quality of work that to suggest otherwise would be supremely unwise, or at least historically inaccurate.

But, yes, I did notice all the best tanks I've ever played with in XI and XIV suddenly were terrible tanks overnight as if someone put "forget all you ever learned about XI and XIV" in their morning tea.