There are many ways to identify fake or sketchy websites from real ones. One of the best and easiest is to look in the top left, right next to the url, if there is a closed lock then it is probably trustworthy, as the connection to the site is secure. Another red flag is if the site seems to be trying to lure you somewhere else, or if clicking on something will open other tabs, or other webpages or websites. As you spend more time on the internet you should be able to tell if most sites are real or fake by the general vibe the give off.