You should realise what happened to what was left of the Empire after Rey channelled all of the Jedi’s power into the destruction of Palpatine.
Thus balance brought back to the Force as prophecised, with Rey being that last Force user: the Light Side prevailed.
His reliance on Tyranny Through Technology - especially the Death Stars - were previous examples of Hubris. The ultimate example of that was - despite all his careful planning, especially via chip implants in/neurological programming of the cloned Troopers and ‘Order 66′ - the extermination of the Jedi Order, with later the remaining one that opposed his power: Rey. But he hadn’t counted on how all those Jedi had merged with the Living Force, impossible for the likes of him, thus reduced to relying on technology to stay alive.
Sidious had ensured the Sith’s extinction by his own hands.
All that meticulous planning: yet he couldn’t have figured that out. It’s ironic…!
In a way, Putin is Palpatine: all his careful interference in other countries: certainly electorally.
And how ‘Conquering Ukraine in Three Days’ turned into not only his own economy-eliminating Vietnam three years later a Trump-promoted deal signed in which both US & Ukraine profit has destroyed Darth Vlad.
Even Kylo Ren used a blue Jedi lightsabre when he turned to the Light Side and became Ben Solo again.