Alexandra Cooper debuted her first solo episode of the “Call Her Daddy” podcast Wednesday after a dramatic split with former co-host Sofia Franklyn. Cooper, 25, christened the now-one-woman show by airing out dirty laundry about the increasingly high-profile cast of characters involved in the saga.

In an episode called “The Funeral,” Cooper dished on her breakup with Franklyn — a tangled drama that spilled all over the internet last week and even involved a slight cameo by Justin Bieber’s manager, Scooter Braun, who haplessly wandered into the fray.

Cooper divulged details of Franklyn’s relationship with HBO Sports executive Peter Nelson, whom she called selfishly invested in their career and a “creeper.” Neither HBO nor Nelson have responded to The Post’s request for comment.

“The last back-and-forth, big communication I had with Sofia was f - - king awful,” said Cooper, who is no longer living with Franklyn. “She said some things to me that I can’t imagine ever saying to a friend.” Franklyn has also not returned The Post’s request for comment.

She didn’t have kinder words for Nelson, whom she lumped into the group of “men with these big ass names … trying to come in and finesse their way into ‘Call Her F - - king Daddy.’ ”

Cooper also claims the interlopers included agents at William Morris Endeavor, whom Cooper said tried to get involved in contract negotiations. The talent agency hasn’t responded to The Post’s requests for comment. Another surprise player? “Scooter f - - king Braun.” Over the weekend, Braun showed interest in patching things up between the hosts.

“I don’t even know the guy,” Cooper said of Braun. “My co-host is trying to have men come in and play penis games over a show that they do not know jack f - - king s - - t about. They care about the money.”

Braun didn’t respond to The Post’s request for comment. But in Tuesday’s episode of her podcast, “Token CEO,” Barstool Sports CEO Erika Nardini said Braun, an old friend of her’s, lacked the context to understand the drama and was simply trying to help out.

Cooper reserved the most scorn for Nelson, whom she and Franklyn gave the nickname Suitman. Cooper claims he was more of a career-killer for his girlfriend, speculating that he did so in the hopes of eventually leaving HBO and starting his own podcast company. When it came down to the contentious “Call Her Daddy” contract renegotiations, Cooper said Nelson was so eager to be hands-on that Cooper’s family raised red flags about his intentions.

“He would always mention to us, ‘You’re going to need a business manager.’ As months went on, [it was like,] ‘Oh, wonderful, we’re just f - - ked.’ It was just so obvious that he was there … not just out of the goodness of his princess’ heart.” Instead, Cooper claims, he wanted a “piece of the pie.”

Cooper, who claimed that she did an inordinate amount of the labor, including editing, brand building and social media, said she eventually started to feel she was in a business relationship with Nelson instead of Franklyn.

“I felt like it was me and Peter Nelson and it felt like my friend was checked out,” said Cooper, adding that Franklyn seemed naive and frequently said she wanted to become big enough to “make money in her sleep.” To which Cooper retorted, “Sweetheart, you have to first work to make money in your sleep.”

And despite their united front on the show, Cooper said there were always issues between the pair that were exasperated by Nelson’s influence. She recalled their first work trip to LA, which was also early in Franklyn’s relationship with Nelson.

“He just so happened to also schedule a business-meeting trip that weekend to LA,” Cooper said, adding that Franklyn began sneaking around and making excuses to see Nelson throughout the trip.

“Sofia wanted to go see Peter … I wanted to go party … but I also knew, like, we needed to be a united front. People saw us as the ‘Call Her Daddy’ girls, so if I … show up alone, it’s not the way we wanted to present ourselves in the industry.”

Cooper claimed that Franklyn began to be less involved in the podcast as her relationship with Nelson progressed.

Going forward, Cooper said she viewed the whole public episode as an opportunity to start fresh and bring more authenticity to the table with the solo show.

“I don’t know if you guys, the listeners, would accept the side of me about my education, about the way I was raised, about my friends outside of my co-host, and the family I have,” she said, adding that her background is quite a bit tamer than her public persona. “I think if anyone looks at Alex Cooper, they’re like, ‘Degenerate whore, like literally crawled out of the sewer.’ ”

She wants the new show to have a broader range of topics than its former iteration, she said.

“It was too forced. We felt like we had to have a sex topic every f - - king week,” she said. “What if I haven’t sucked a d - - k in two weeks?”

Still, she promised to not abandon their core coital interest: “Sex is never not going to be part of this motherf - - king show,” she said. “ ’Call Her Daddy’ can be whatever the f - - k we want it to be.”

And despite Cooper’s less-than-charitable words about her interactions with Franklyn, she said people online should lay off her former best friend.

“We don’t need to agree with Sofia and her decisions, but we don’t need to be bullying her.”