Puppeteer Bypass Cloudflare?

Questions
1

I have a problem with Puppeteer to bypass this site. Nothing loaded, i checked with Dev Tools and i got 503 error.

Please turn JavaScript on and reload the page.

Here is my code.

BLOCK:PuppeteerOpenBrowser
ENDBLOCK

BLOCK:PuppeteerNavigateTo
  url = "https://cmanga.com/su-tro-lai-cua-phap-su-vi-dai-sau-4000-nam-138"
  loadedEvent = DOMContentLoaded
  timeout = 300000
ENDBLOCK

BLOCK:PuppeteerClick
  findBy = XPath
  identifier = "/html/body/div[7]/div/div/div/div[1]/div[2]/div[3]/button[1]"
ENDBLOCK
2

I used to change useragent to mobile or linux and it would fix the error with openbullet 1