Why do I feel like the web novel is so hard to read ?

It’s a genuine question, im not trying to judge the author on its writing style or the translator but as a non-native english speaker I find the translation really hard to understand. There are a lot of errors with pronouns and some expression are not completely translated (words still in Korean) / quite rare. I don’t know if it’s specific to novelhall.com or is it just me that is too new to reading webnovel ?

I really like the story but found my lacking ability to understand quite overwhelming. If anyone has any tips for me te understand and appreciate the novel better I’d be grateful. Thanks