I’ve never felt that way when reading this manhwa, but just know that this is really good hahaa it makes you anticipate the next chapter and leaves you wanting more. It might not be your cup of tea, but it shouldn’t take long to read up to the latest chapter, so try dropping it at a later chapter if you really don’t like the mc. Also if you think she’s trying too hard then just remember that she lived through her entire first life without knowing that the source of her problems were her sister all along and she’s just trying to survive in her second life.
You're still at the moment where she's still desperate and when her execution is still fresh in her mind. She'll soon realise how desperate she is and feel guilty about it then will calmly think about her actions and tactics while still trying to survive with her mom. She's gonna get better and would only pay back those who would harm her and her mom. The dramas are also fun to read as she gets better with her tactics.
Idk if I should continue or not, I only reached chapter 16 but the m.c. is throwing me off a bit. Like yea I understand everything and such but it's like she's trying too hard