Why didn’t bourgeois revolutions take place simultaneously in all countries of the world?

Because it had to be influenced by many factors. In this case, just like revolutions, all events in national histories would take place simultaneously and there would be, in principle, no difference anywhere and in anything. First of all, it should be said that far from everywhere public thought and the public in general are ripe to try to develop radical actions for changes in the state. If you approach from a purely Marxist point of view, then simply in many countries the feudal formation did not reach the final stage.