There are guidances. The ICO for example. You might misunderstand law in general. Much of it is expert guidance. For complex areas, like GDPR, you might have 3

There are guidances. The ICO for example. You might misunderstand law in general. Much of it is expert guidance. For complex areas, like GDPR, you might have 3 lawyers with 5 different ideas. Most law is educated guesswork until it reaches court.