As fun as it is to watch speedruns strategically use game-breaking tricks to make a fifty-odd hour game as few hours long, it's not something that most people like to try and do the first time they play through a game. Even tricks that benefit the player are generally avoided unless you're finding it impossible to finish a fight. There's something about finishing a battle through legitimate means that's just generally more appealing, regardless of how weird or amusing the trick method is.
But this doesn't mean you can't still break the game. Because video games involve such complicated coding, it's easy for there to be small things they didn't think about protecting or preparing for - or bugs that mean even things they tried to avoid becoming a problem for the game script still mess it up.
Even the most innocuous of things can end up accidentally dunking your whole game into the proverbial ocean. While this is fair when you're messing around, it's less fair when your whole game sabotages itself for crimes such as "trying to play it", or "completing the main story".
Sometimes, you have to just risk the fact that you might accidentally corrupt your own save. And, generally, most games are worth taking that risk.