Guns couldn't get thru personal shields, so they were going to use a bow or throw a spear or something.

That's almost a trope, too. In the Dune series it is the same, so consequently hand-to-hand combat is the norm. And even in Stargate Apophis had a personal shield protecting him from both staff weapons and Tauri projectile weapons until SG1 (I think it was O'Neill himself but it's been a hot minute s8nice I watched that episode) watched his guards pass him a staff weapon and O'Neill threw his knife through the shield in response.

Also, in Star Wars projectile weapons were still a thing (called sluggers or slug throwers), for example with the Sand People. And Jedi hunters often used slug throwers since projectiles could not be deflected by lightsabers, Mandalorians used this during their wars against the Jedi.

In the Star Wars universe people can ignore radiation, move objects with their minds, react to things that haven't happened yet (how else do you dodge a laser or block a blaster shot???), and there are force fields and alloys (beskar) that stop anything. Bullets would only work against stormtroopers or woefully unprepared civilians.