Yes, several Jedi and Force users dual-wield lightsabers, a technique called Jar'Kai, though it's more common among Sith or darker-aligned Jedi; notable examples include Ahsoka Tano, Anakin Skywalker, Asajj Ventress, Pong Krell (who used two double-bladed sabers), and even Darth Sidious, showing it's a versatile, though often aggressive, fighting style not exclusive to the dark side.
Dual-blade practitioners of Niman included Jedi Master Kavar, who utilized a shoto as his secondary weapon, and the Jedi trainee turned Sith Lord Exar Kun, who took up an additional weapon on occasion. However there were few dual-blade duelists that practiced classic Niman, though the Jar'Kai tactic saw fervent usage.
Using two sticks that can cut through just about anything, would require a lot of training and focus. And jedi were more peace keeps than soldiers, wielding one blade is more defensive, where two is more aggressive, and as peace keepers, they want to present a more defensive image.
It was more frequent in the Old Republic era. Jedi Shadows, Satele Shan, and Kira Carsen among others used double-bladed lightsabers.
Because Form VII drew on a negative emotional state, drawing so heavily and continuously on the Force brought the practitioner perilously close to the dark side of the Force.
Tràkata is a rare and cunning lightsaber technique built on deception and misdirection. Jedi like Kao Cen Darach and Cal Kestis used it to gain surprise advantages in battle, while Sith like Qimir mastered its lethal precision.
The Acolyte's sixth episode reveals Qimir was once a Jedi, making him a formidable dark side user.
Ahsoka Tano's lightsabers were a pair of lightsabers owned by Ahsoka Tano during the Clone Wars. The weapons were a single-bladed lightsaber with a green blade, which was later accompanied by a shoto lightsaber with a yellow-green blade that she built upon taking up Jar'Kai during the latter half of the war.
During one of these missions she would break the Jedi Code's rule of attachment by falling in love with Darman, RC-1136, a clone commando in Omega Squad, and becoming pregnant with his child, Venku Skirata. The two would later marry in the traditional Mandalorian way shortly before her death in 19 BBY.
There were many female Jedi Masters, and they were called Jedi Masters rather than Jedi Mistresses (e.g. Shaak Ti and Adi Gallia). Female Jedi and Sith generally use the titles Jedi Master and Sith Lord in Legends, too.
He wielded two lightsabers against his renegade apprentice Darth Maul and Savage Opress on Mandalore, took up arms to battle the Jedi on Coruscant, and used one of his crimson blades against his enemies on Ryloth.
After defeating Vader in a duel on Mustafar, Obi-Wan Kenobi took Anakin's lightsaber with him into exile on Tatooine. Obi-Wan gave the lightsaber to Anakin's son Luke, who used it in taking his first steps along the Jedi path. But Obi-Wan didn't tell Luke the terrible truth that his father had become Darth Vader.
Anakin Skywalker was a known user of Djem So, both during his initial stint as a Jedi and later when he subsequently fell to the Sith. The Shien variant of Form V allowed the utilization of an unconventional reverse grip, which Ahsoka Tano was known to prefer and use during battles.
The Lost Twenty, also known as the The Lost, was a name given to the group of twenty Jedi Masters who left the Jedi Order throughout its history. According to Yula Braylon of the Jedi High Council, the Lost Twenty became disillusioned with the Jedi way of life.
Likely unaware of his true nature, Snoke was an artificial genetic strandcast created on the planet Exegol by the resurgent Dark Lord of the Sith and Galactic Emperor Darth Sidious as a proxy and the product of cloning experiments.
Haja Estree posed as a Jedi. During the reign of the Galactic Empire, the human male Haja Estree resided on the planet Daiyu, working as a con artist.
According to wookieepedia , special contingency order 37 was: Capture of a single wanted individual through the mass arrest and threatened execution of a civilian population . Follow-up directives include scenarios for body disposal of civilian casualties and suppression of communications.
Knowledge of Form VII became restricted among the Jedi Order, whose members were worried that its precepts would lead practitioners toward the dark side. In contrast, members of the Sith, such as Darth Maul, employed Juyo without reservation, as did Dark Jedi such as Galen Marek.
So: which lightsaber is the most powerful? The answer depends on what you value most: the devastating raw power of Kylo Ren's unstable blade, the symbolic might of Anakin Skywalker's blue saber, the balance reflected in Rey's yellow lightsaber, or the legendary authority behind the Darksaber.
The Ghostfire Kyber Crystal is one of the rarest in the galaxy, known for crafting silent, nearly invisible lightsabers with ghostly afterimages. Found in remote Outer Rim peaks, it features in Star Wars Legends as a weapon of stealth and illusion.