In Rise of Skywalker, we saw a massive plot to resurrect the Sith try to unfold. However, their fleet, military, and cultists were all destroyed before their scheme could truly take shape. In addition, the First Order suffered a colossal defeat in the end. Still, even though the Sith are permanently gone and the First Order is crippled, there will always be ways for the dark side of the Force to rear its ugly head again. As Maz Kanata pointed out, the dark side has ways of evolving and changing. As the Galactic Empire proved, there will always be remnants of the First Order that will never surrender. Since the First Order originated in the Unknown Regions, it is very likely they have strongholds and outposts that are beyond the reach of the known galaxy. Those strongholds will likely rebuild their strength in the Unknown Regions like they did the first time and one day renew their efforts to conquer the galaxy. Since Palpatine established no Contingency plan this time, whatever remnants of the First Order that remain will not implode and will last a lot longer than the Imperial remnants. Palpatine’s Sith Eternal cult may have been destroyed in the Battle of Exegol, but the chances of them being the only dark side cult in the whole galaxy are extremely slim. When the Galactic Empire collapsed, a dark side cult called the Acolytes of the Beyond emerged. With this in mind, it is very likely that more dark side cults will rise in the aftermath of the First Order’s defeat. Even though the Sith are permanently extinct, their dark legacy will ensure a new breed of dark side practitioners will rise to replace them. The ancient Sith left artifacts saturated in the dark side across the galaxy. Several were either recovered or destroyed, but it is unlikely that they were all found, which opens the door for Sith-like Force-users to rise. Overall, Rey Skywalker’s new Jedi Order will have no shortage of enemies to fight as they recover their strength.