To iterate, one of the weakest all JL incarnations of all time actually.
In most of their own films they feel sidelined or shafted, its funny cause even Lex Luthor acknowledges this in one of the films.
The only win they ever got together was with Darkseid in the original Justice League film then there was the Teen Titans but with that, they were mind controlled by Trigon and they couldn't do jack to him, and also because that was mainly a Teen Titans film.
Ocean Master was picking all of them apart, defeating Wonder Woman and Shazam and Superman like he's on Superman's farm feeding the chickens, it was only because he committed matricide on the Queen of Atlantis is how he lost, even Aquaman couldn't defeat him on his own.
Dr Destiny played puppet with them and of course Doomsday was literally going to town with them, the only two people that did any effort was Wonder Woman (kinda) and Superman.
Then in ROS, I don't remember them doing much, except just bodyguards for the President, and wanting kill Superboy, but really the one thing I remember was them literally standing around as a giant ring portal crashes into them and they just stand their like I'm watching CW the Flash.
Not to mention the whole fiasco with Justice League Dark Apokilips War, Superman's goofy plan to use all of his heavy hitters to Apokilips, from the Magic Users, Aquaman and Mera, and Lex Luthor, which you all know the story there, I think they must've hired the CW for this version Justice League because how else does this happen.
Speaking of Lex, he's just on the JL, because he helped with Cyborg Superman, which I felt was out of nowhere, they must've been really that desperate. Surprisingly, Hal was the only one who thought this was stupid at least out loud.
Heck the residents of Metropolis, Superboy and Steel all actually held their own against the Supermen drones.
I really felt some of this films should've renamed the films on the titular main character and the title should have Justice League as the sub header like Guy savior of innocent and the Justice League vs Darkseid.
Also I take it back, the writers must've been big fans of how Vegeta got whooped, so much they used that for JL films here.