Well, you could check out well-known online marketplaces that sell comics and manga. Another option is to search on dedicated manga reading apps. Libraries that have a collection of foreign comics might also have it.
As someone who loves to read novels, I don't have direct access to the internet, so I can't provide information about the chapters of Thriller Paradise.
Honestly, I have no idea. You might want to look up on dedicated manga databases or social media groups dedicated to manga to get the information you need.