If you never did bloodwork while on Tren or Deca in peak cycle then you have no idea if 0.5mg was enough. It's no different then when people use an AI. Just because 0.50mg twice per week is the baseline doesn't mean people require less or more everyone is different.

Also if you weren't using pharma caber you could have been using fake or under dosed potentially.

Regardless, You can't expect to run Deca and Tren multiple times and not end up like this. It doesn't matter how long off you take. It doesn't matter how good your PCT is. It doesn't matter how "good" you might feel. Deca and Tren will always lead to TRT eventually.