Star Wars universe does have lasers of all scales and power levels.
Yet literally no one uses them well on a personal scale.
The Jedi (and Sith for that matter) imbue it with a power of magical stone, and then…use it as a saber.
To balance this stupidity, stormtroopers, clones and droids all use slow, non-continuous energy blasters. With actual lasers, they could insta-kill any Jedi, but they cannot, because otherwise the movie wouldn’t exist.
Just because you don’t understand the science does not make it magic. The force is described as a biological phenomenon that the Jedi have some understanding of, whether the audience learns about it or not is irrelevant, it’s science fiction by definition.