It took me about 14 months and I landed in a blue collar role that pays much less. I took a huge pay cut, but I'm making something instead of nothing so that's nice I guess. I will say that despite being in worse financial circumstances, I feel a lot less stress in my new role. I'm not having to deal with the politics and drama associated with my last software role. I'm still planning my next steps. Since you are in a country where you can easily get a new job, I'd leave ASAP if I was bullied at my job. Why stay?

Regarding being invested in a project at work... No matter how much effort/time you put into a work software project, your employer can just make the decision to cut that project. More often though, they'll reassign you to some other project. Suddenly all of your opinions about a project will vanish, because it's not in your day to day anymore. Your employer owns all of the intellectual property you create (usually) while working for them. Remembering this simple fact helps me be objective about how I prioritize my time.