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.
Iirc, that’s because none of the items mentioned in this post actually are lasers in the star wars universe. They’re actually supercharged bolts of plasma.
Laser weapons are considered primitive tech. Like who wants a space gun that just fires into infinity? You might blow up something incredibly far away by mistske.