And always have 2 factor authentication activated.
2FA is very important.
additionally what i do is that i always bookmark these important websites and i open them through my bookmarks instead of clicking any links.
also a quick way to notice a fake site for me has always been based on their "zoom"! usually browsers remember the zoom level that you used on the websites. for example (if you haven't already) zoom in while seeing this topic then visit one of bitcointalk mirror/fake websites such as this one:
fake link: https://bitcointalk.org/index.php?topic=2981675.0now you can clearly see it is a different website you are visiting based on its zoom alone.