Absolutely, this isn't limited to ChatGPT at all. Most of this space will eventually be dominated by a few players, and the niches will be filled by echo chambers of truth perhaps, similar to how modern social media space formed.
Giving complete power over choice of dataset to a cooperation without any transparency over selection process is not a great idea.
Regardless of what complex strategy you apply in the real world, this still indicates that there's a bias at the core of a 50-50 fair bet in the long run, ability and IQ aside.
Besides the economy can very well have zero sum game elements to it
As others mentioned i would seek professional advice.
But here's my anecdotal advice, whenever i feel self pity and overwhelmed to the level where i don't know where to start, i try to get back to basics and focus on small picture stuff that are within my control.
Anything that you'd be happy with doing for the day, that depends on only yourself and not other's approval.
Start with trying to improve your mental health and mood, wether its a small level of exercise, better diet, saying yes to any social occasion, change of scenery ...
Once my mental outlook improves, the rest of my approach to life improves.
P.S the fact that you took steps to reach out for help is a good sign