I really just feel it's because most people who use OOP end up increasing the complexity of their code and have no idea how to use it to make things simpler, sa

I really just feel it's because most people who use OOP end up increasing the complexity of their code and have no idea how to use it to make things simpler, safer and more reliable. It was like a lightning had struck when I realized that if you did OOP in a certain way you could make guarantees that some mistakes would be impossible to make, and that whatever I had been doing for the past several years was not even remotely OOP, even though everything was in a class. The reason I'm interested in learning functional programming is because it seems like it too holds the promise of eliminating errors entirely, if done well, perhaps not in a mutually exclusive way.