After two years... I finally was able to quit my job.
I'm finally in a cool job, with a great team, with a cool project (from scratch! )
I have to learn Spring and Vue.js, knowing that I never tried any framework of these languages. But I really want to make it, I didn't suffer for two years, just to be beaten by a stack :p

Thanks for the ones who commented on my rant a few months ago, telling me to keep hoping for a better job. I got hired three days after the end of my previous contract, and I couldn't feel better now!