How you know its not a scamming site or if its fake or real

For the last 2 week we have been talking about what makes you safe online without getting scammed. So another word is phishing that means they steal your personal information. Like example lets say that there's a iPhone 11 pro give away and you just need to give them all of your personal information. To make sure your not getting scammed make sure that at the top of screen at the URL that it says https in green and that there's no spaces. So if someone sends you an email saying

"Hey friend I have just won the lotto of 5 million dollars and if I can put my money in your credit card you can have of the money you just need to give me your credit card number and address"

Somethings are to good to be true. We done something similar about a 1 week ago about tree octopuses and when we were scrolling down the page we saw a picture and rad about it. My class and I gathered all together and when we saw the picture  it looked fake because the tree octopus was on a Christmas tree next to Christmas lights and the tree octopus looked like a toy octopus.

Here's a picture
The easy thing about doing this was seeing the pictures to decide if it's fake or real.
The hardest thing was trying to know if it's a scam or not