A 503 error occurs when the bot accesses it

When I check it with a browser, I can access it without any problems, but when a Google or Yandex bot accesses it, it returns a 503 error.

https://companydata.tsujigawa.com/

Can you see those access attempts in the logs? If so, you can craft a rule to allow access, it sounds like they are timing out, perhaps due to a challenge or block.

Look here for events, https://dash.cloudflare.com/?to=/:account/:zone/security/events