[ColonelBlimp]

>I found out about this only 6 months in.

The fact that you realised what had happened 6 months after signing the contract might give you some information about how motivated you were about this job in the first place.

Of course, this is just me guessing but it looks like you've been delaying an important decision about what you want and can do about your career. In fact, your message contains some hints about what the issue is.

Finally, not a piece of advice though, but whatever you decide, try to do it as a positive step not as a direct reaction to what happened with your current employer.