You can try some manga and manhwa reading websites like Webtoon or MangaReader. But be careful as not all of them might be legal or have the latest updates.
I'm not sure about any legal places to read it for free. You might want to check out some public library websites or subscription-based platforms that offer free trial periods.
In many cases, it is legal to read manhwa online if it's from authorized and legitimate platforms. But reading from unauthorized or pirated sources is illegal.
I'm not sure if there are many legal and free options. Some websites might offer limited free content, but it's often best to support the creators by using paid subscription services.