
Could someone spoil the story for me? I’m wondering if it’s worth checking out

It’s the typical revenge regression story but its worth it because the mc actually does revenge together with the ml. They get revenge on each and every person that offended and wronged them in the past. The revenge was mostly done by mc and she gets to be very badass and makes the story very satisfying . Its worth the read. Trust me

I just started reading the story, but I don’t mind spoilers? How come the emperor ended up having two kids with the emperor when he loved the female leads mother, and then proceed to have another child with the Empress? Are those his biological children or it’s just one of those once again man can sleep with two different women situation? Even if he loves one and doesn’t love the other.

Because the FL's mother left him (without telling him she was pregnant). Time went by, but he was pressured into marriage. He's the emperor so he needs to have an heir and at this point he figured the woman he loved was never going to come back. He ended up with the empress who was in a similar situation as him because she was in love with another man, but her father (duke Flyod or whatever the title) had him murdered. So anyway their marriage was just of convenience.
The emperor may not love FL's mother anymore either, since she did hurt him deeply in the past and it's been a really long time (we don't know how long, but at least 11 years).

I love crying possessive needy men. Do you guys have recs?

The main ones that come to mind are Beware the Villainess, Evil Lady's Hero, I Raised my Fiance With Money, Survive as the Hero's Wife and Another Typical Fantasy Romance. Those have actual pure sweethearts. The rest are just pretending ( ̄∇ ̄")
If you don't mind, maybe look for Friends Shouldn't Act This Way, S-Class Self-Employed Person, I Only Treat Villains, I Became the Wife of the Male Lead and I'll add in Kneel, Your Grace bc it's too funny not to
Tbh you might've already read these since they're popular but I can't really recall more since the rest are all kinda... the same? I don't even remember the plot since they're jumbled together in my mind now. Can't keep track

I really want her father and brothers to meet her biological father. I want to see them get jealous and duke it out. Seeing them get all possessive would be fun. I also want to know the reason for why her bio dad disappeared and never searched for them.

my thoughts on that is most likely he encountered some assassin/fought someone and he got smack to the head again and memories came back and woke up in another place months later not knowing what happened. smh. he should at least employed some investigators to track his actions for those months when he had amnesia and he would have found out he married someone.

well....
[SPOILERS]
Here we see Camilla deciding she's gonna try and work something out with the bio father. He's ok. A bit too clingy, overdramatic in how he cares for Camilla and wants to be in her life. Due to the underground info group that Sorfel has, they found out that the Duke Escra told Camilla that she was his daughter and so they were reluctant in telling her to go home just in case she says she doesn't want to anymore. Ravi and the Sorfel men gets a bit distant with their calls because they were afraid of what Camilla might say. Ravi (now with the added monologue here in the manhwa that he's afraid of losing her too), gets upset and is afraid that even Camilla would abandon him.
Timeskip to a few weeks and Ravi gets called in to explore a magic dungeon/tower along with his magic peers. Some accident happens and Ravi and the group are declared missing. Camilla makes up her mind about going back and uses the assasin group who tried murder her to secretly go back to the Empire (remember: travel between the 2 empires are prohibited because of the assasination attempt to Camilla which doesn't make sense because they had a trade deal but ok). She planned on doing it secrely but when she gets to the tower/dungeon she gets emotional in seeing Ravi again (the missing group saved themselves using magic) and hugs and cries on him in view of all the rescue mission team. And so, the Sorfel princess was back to the Sorfel family.
As I said, Duke Escra is clingy and he follows her to the Empire but that's another thing. The novel did briefly delve into what the Sorfel men thought of Camilla's bio dad but hopefully they expand it the manhwa because what were they thinking in letting Duke Escra stay with them when all they wanted was to have Camilla not abandon them.
it only took 78 chapters for them to finally confess their feelings for each other lol. But I’m just so happy I love them together and this chapter was absolutely adorable.