No, 'Madres' is not based on a true story. It's more of a work of imagination and creativity by the writers and filmmakers. However, it might touch on themes and emotions that are relatable to real-life experiences.
The key to reading manhwas is to immerse yourself in the story. Pay attention to the details in the art and the expressions of the characters. You could also join online communities or forums to discuss and get different perspectives on the manhwas you're reading.
Since I don't know much about this particular 'Madres Based on a True Story', I can't say for sure about the actors. It could be that there are some relatively unknown actors who give great performances to bring the true story to life, or it might feature some well - known actors if it has a larger budget and more exposure.
You can try some adult-oriented comic websites. But be aware that accessing such content may have legal and ethical considerations depending on your region.
Some popular platforms to read manhwas are Lezhin Comics and Tapas. Both offer various genres and stories to choose from. Also, you might find some on Naver Webtoon, which has a large user base and a diverse range of titles.