When it comes to email, the rule is simple: don't use the same email for all websites.
It's a common practice and a good one, but sometimes it can become too convenient. Sharing one email address with multiple sites can make it easy for hackers to get hands-on with your email from data breaches.
This can lead to data leaks and even identity theft—and that's not something we want to happen!
~ ~ (a ghost from my past - screenshot attached, used to have the same email for all websites) ~ ~
So how can you keep your email safe? The best way is to compartmentalize your emails e.g., 1 email for social media, 1 private email for banking and 1 Email for personal use most importantly, for junk website sign-up use burner email services like https://temp-mail.org/en/. This way, one email breach won't impact other compartments.
Be safe out there.
P.S: you can see if your email is breached at haveibeenpwned.com