You can try fanfiction platforms like Archive of Our Own (AO3). There are often a large number of fanfics related to various characters and ships. Just search for 'Max and Lucas' on it, and you might find some great lemon fanfics. Another option could be FanFiction.net, although the content quality can vary more there.
Well, first of all, Tumblr is a good place to start looking. A lot of fans post about their favorite fanfics there, and you might be able to find some Max and Lucas lemon fanfics through reblogs and tags. Also, some dedicated Stranger Things fan communities on Reddit might have links or discussions about such fanfics. But make sure to follow the community rules when you're searching.
Chapter 300, ", Battle for Command Authority", is the clearest early answer because the buildup finally cashes out in a real clash. It opens with Gu was on Korolya III, coordinating with a joint investigation team... and closes on However, what Cai Minjin proposed next was something Yan Fangxu could.... The key payoff is that the danger stops being abstract and the conflict around Flash Tail Operation becomes immediate, forcing the surrounding cast to react under pressure.
Chapter 275, ", Mobilization", is the clearest early answer because it turns Union's situation into a concrete plot event. The chapter turns that into something concrete by moving from In Weixing City, Osenia was inspecting the factory construction... to Just this assurance alone was enough to ensure that the vast majority.... What makes it stick is that the chapter closes with The time for full mobilization of war potential hadn't come yet, just as Patel had said.
Chapter 364, "Golden Light Enters the Dream", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter turns that into something concrete by moving from By then, filled with towering hatred and having already memorized the... to Gu Hang, enduring the feeling of weakness, calmly greeted the people,....
Chapter 208, ", am I becoming the head of the provincial government now?", is the clearest early answer because it turns Rage Owl Star's situation into a concrete plot event. The chapter turns that into something concrete by moving from Flying Wing Star, the Gu Family residence. to However, she eventually sighed, "That won't work, at least not now.".... What makes it stick is that the chapter closes with Rage Owl Star was once a developed world of energy extraction;
Chapter 275, ", Mobilization", is the clearest early answer because it turns Union's situation into a concrete plot event. The setup is In Weixing City, Osenia was inspecting the factory construction..., but the pressure keeps building through Prime Minister, please look," Patel said, pointing to the workers....
Chapter 400, ", Korolya Pays Taxes", is the clearest early answer because it turns Shang Yanwen's situation into a concrete plot event. The setup is The changes in the Green Bee Street District made Shang Yanwen feel a..., but the pressure keeps building through He hadn't returned for four years, how could it feel as if he had....
Chapter 413, ", Overall Warfare", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Gu Hang accepted the invitation to join the war and was willing to..., but the pressure keeps building through The factor concerning Yelisia certainly played a part, but it was not....
Chapter 280, ", The Voice of Fury", is the clearest early answer because it turns Anat's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Anat's expression became stern and tense. and follows through with There will also be a chapter tomorrow at noon..
Chapter 336, "The Empire’s Sustainability Pill", is the clearest early answer because it turns Imperial Tax's situation into a concrete plot event. It opens with About the matter of Korolya III, Gu Hang didn't even dare to continue... and closes on Ivan Fatches said that the taxes cannot be paid on time and in full.... The key payoff is that the chapter closes with "Ivan Fatches isn't completely avoiding taxes.
Chapter 365, ", A Million Kindness", is the clearest early answer because it turns Imperial Navy's situation into a concrete plot event. Early on, Though their combat strength was fierce, and they played a.... By the end, Fino City may have been destroyed, but the Plague Demon Army that....