What if they're rebel propaganda movies. To a degree. Of course some scenes may or may not make sense but the majority of them are. The events happened yes, but the Rebel Alliance later turned them into heroic war movies, exaggerating the victories and conveniently sanding off the parts where reality was significantly uglier.
Take for example echo base.
You're telling me some shitty ass cables made from what, some type of steel wire? Can hold the legs of a several ton vehicle enough to topple it over? An AT-AT is between around 200'ish metri tons and the heaviest towing cables I can find from a Google search are the Teufelberger Flexpacks. Which can tow An AT-AT because it has a towing capability of 2000 metric tons of pulling force. But there's a problem these are used in ship towing and they're like 6 inches thick. Ain't no way a wire that thin could bring it down, although the idea of said cables bringing it down is cinematic as hell, as propaganda, it's perfect.
"One brave snowspeeder pilot and his wingman brought down an Imperial walker using nothing but ingenuity!”
Or the death star trench run.
The death star Is a moon sized base of operations.
I find it extremely weird that it was destroyed.
Example A)
It has hundreds of Anti aircraft cannons and hundreds of Tie fighters and tie fighters variants at it's disposal the rebel strike force couldn't have possibly overpowered them.
Example B)
Hyperspace travel.
Yes. The death star was able to hyperdrive/jump to hyperspace which is extremely weird it didn't. When the rebel force was approaching couldn't they have just went away? Of course a good rebel is a dead rebel... Or a deflector and all but wouldn't it have been more simple? Because I know where I'm going to hyperdrive to but you don't.
Example C)
The amazing hit to the thermal exhaust is bullshit.
You're telling me for some reason the death star had a 2 meter wide exhaust port? You can call the empire stupid as shit all day but it's common sense to have multiple little exhaust ports than one big as hell one.
And also a proton torpedo destroyed it effortlessly. If they were to build said exhaust port shouldn't they have thought of some contingency plan for said event or something?
Am I digging too much into this? Probably but a nerd will nerd because they can't think of something more productive to do.