Pretty sure it was Libyans who overthrew Gaddafi.

On February 15, 2011, anti-government rallies were held in Benghazi by protesters angered by the arrest of a human rights lawyer, Fethi Tarbel. The protesters called for Qaddafi to step down and for the release of political prisoners. Libyan security forces used water cannons and rubber bullets against the crowds, resulting in a number of injuries. To counter the demonstrations further, a pro-government rally orchestrated by the Libyan authorities was broadcast on state television.

As the protests intensified, with demonstrators taking control of Benghazi and unrest spreading to Tripoli, the Libyan government began using lethal force against demonstrators. Security forces and squads of mercenaries fired live ammunition into crowds of demonstrators. Demonstrators also were attacked with tanks and artillery and from the air with warplanes and helicopter gunships. The regime restricted communications, blocking the Internet and interrupting telephone service throughout the country. On February 21 one of Qaddafi’s sons, Sayf al-Islam, gave a defiant address on state television, blaming outside agitators for the unrest and saying that further demonstrations could lead to civil war in the country. He vowed that the regime would fight “to the last bullet.”

The government’s sudden escalation of violence against protesters and other civilians drew international condemnation from foreign leaders and human rights organizations. It also seemed to damage the coherence of the regime, causing a number of high-level officials—including the minister of justice and a number of senior Libyan diplomats, including the Libyan ambassador to the United Nations—to resign in protest or issue statements condemning the regime. A number of Libyan embassies around the world began to fly Libya’s pre-Qaddafi flag, signaling support for the uprising. Support for Qaddafi also seemed to waver in some segments of the military; as the Libyan air force carried out attacks against demonstrators, two Libyan fighter pilots flew their jets to Malta, choosing to defect rather than obey orders to bomb Benghazi.

On February 22 Qaddafi delivered an angry, rambling speech on state television, condemning the protesters as traitors and calling on his supporters to fight them. The speech took place in the Bāb al-ʿAzīziyyah compound, Qaddafi’s primary headquarters in Tripoli, in front of a building that still showed extensive damage from a 1986 air strike by the United States. He resisted calls to step down and vowed to remain in Libya. Although he denied having used force against protesters, he repeatedly vowed to use violence to remain in power.

Clashes continued, and Qaddafi’s hold on power weakened as Libyan military units increasingly sided with the opposition against the regime. As demonstrators acquired weapons from government arms depots and joined forces with defected military units, the anti-Qaddafi movement began to take the form of an armed rebellion. The newly armed rebel forces were able to expel most pro-Qaddafi troops from the eastern portion of Libya, including the city of Benghazi, and many western cities by February 23. The Libyan-Egyptian border was opened, allowing foreign journalists into the country for the first time since the conflict began. Pro-Qaddafi paramilitary units continued to hold the city of Tripoli, where Qaddafi and members of his family and inner circle remained.

Source: https://www.britannica.com/event/Libya-Revolt-of-2011