Please tell me Mantaflow is a bad joke

Most of times, problems are related to cache.
You can add another Flow object inside same domain.

  • If that one is emitting a visible smoke, that means that problem does not come from domain.
    So, you have to look at Flow object settings.
  • If no smoke is emitted, that means that problem is related to domain settings.

I fixed it, but no idea how, I’ve tried pasting all of the models and every item into a new file , and it did not work, now I’ve pasted the objects 1 by 1 and it’s working, no idea why

That is a way to break relations between objects.
There probably was a relation responsible to break expected result in original blend file.

Well anyways thanks for helping out, first time using smoke simulations and had no idea why it wasn’t working