He just wasn't explicitly taught it, or dark side sorcerery more generally. His training was focused on the skills of a Sith assassin, being an overwhelming lightsaber duelist. You need real legs to be able to force-siphon the electric current from the ground. That's why Maul or Vader can't use lightning.
Some members of the New Jedi Order such as Luke Skywalker (who also used the dark side version at times), Jacen Solo and Jaden Korr also used light side Force lightning known as "Emerald Lightning", or Electric Judgment, but it remained somewhat controversial to some Jedi.
Palpatine's Force Lightning Was Far Less Powerful Than Darth Siberus' While the Emperor was the first Star Wars character to ever use Force lightning in a movie, Darth Sidious' lightning power does not come close to what Darth Siberus could do.
Dooku first used Force lightning at a young age. According to the audiobook, Dooku: Jedi Lost, he was once abducted for a Dark Side ritual, conjuring lightning to kill his captors and escape. Dooku went on to become one of the greatest Jedi masters, but his ability to use lightning was seemingly a natural talent.
Kylo demonstrably couldn't defeat Snoke directly, instead killing his master via deception. Kylo most likely never learned how to conjure Force lightning, which is considered an advanced skill for dark side users.
Summary. Jar Jar Binks's clumsiness may not be genuine, but rather an act to disguise his true nature as a Sith Lord infiltrating the Republic. Palpatine carefully orchestrated events to manipulate the galaxy, and Jar Jar's involvement suggests he may have been the eyes and ears on Naboo.
While many Star Wars fans would consider Yoda and Palpatine to be almost perfect antitheses of one another, it seems that they share a strange connection through Yoda's usage of Force Lightning in The Last Jedi that is eerily similar to something Palpatine did just a few years prior–and that connection goes much deeper ...
It became seen as a gateway to the dark side, with some choosing to practice it in secret. Remarkably, Mace Windu is only one of a few Form VII users who didn't fall to the dark side thanks to his refining Juyo into Vaapad.
Having trained in the ways of the Force, Darth Maul was a formidable warrior strong with the dark side and possessed deadly skills in lightsaber combat.
The duel. Darth Vader defeats Darth Maul. The two Sith Lords engaged in a lightsaber duel, going through the volcano and onto a bridge situated over a river of lava, which collapsed, though they both survived and continued their battle.
Maul. Maul Force chokes Bo-Katan Kryze in a display of power. At the Death Watch camp on Zanbar, Maul proposed an alliance to their leader Pre Vizsla, telling him and his assembled soldiers that he can help Death Watch reclaim Mandalore and kill Kenobi.
During the mission to Pasaana, while battling Kylo Ren, the Jedi Rey released a burst of Force lightning so powerful it was able to obliterate a First Order troop transport ship.
In canon, it has been speculated that Anakin could, but never learned how to before becoming Darth Vader. As Darth Vader, it's possible that he never did because lightning might be a technique where the electricity travels through your entire body, and Vader is mostly mechanical, so he would destroy his own body/limbs.
Mace Windu, with his lightsaber combat form Vaapad, could reflect the lightning back to its source with a "superconducting loop". It required tremendous effort on the reflector's part, however, as seen in Windu's battle with Palpatine; Windu was seemingly able to overcome Palpatine's lightning.
Although it's not fully clear where the Darth moniker originated, Darth Andeddu is thought to be the first character to use the title in-universe. Having originated in Legends, Andeddu was mentioned in the new canon in the comic Star Wars Adventures: Return to Vader's Castle 2, which referenced "Andeddu's flames".
As Darth Vader, he was one of the strongest beings in the entire galaxy. But even then, he was never able to surpass his master, Darth Sidious. A Sith Apprentice can only become the master when they murder the one who trained them.
Emperor Palpatine, also known as Darth Sidious, is often regarded as the embodiment of evil in the Star Wars universe. His cunning manipulation and orchestration of galactic events, including the rise of the Galactic Empire, showcase his mastery of the dark side of the Force.
Vader knew that he could never defeat Palpatine by himself (especially after his master bested him on Exegol as well), which is why he tried to recruit Luke to help overthrow him during the Empire Strikes Back. He may have not been able to overthrow the Emperor, but he could throw him over the railing to save his son.
Instead, he viewed the Force more as a complement to his combat style rather than a direct tool to be utilized. All of this would fall in line with Maul being a warrior, more than a Force-user. Just because Maul never used Force lightning, that doesn't mean he couldn't.
When it comes down to both combatants in their prime, Yoda was superior to Darth Vader. That debate extends even further to prime Anakin Skywalker as well. He would have been outmatched by Yoda for many of the same reasons Obi-Wan outmatched him, and more.
