I've also used the website haveibeenpwned.com and have suffered plenty of leaks. I've changed my password multiple times, but my email is still being targeted. Is there a way to save it, or should I just dump it?
Of course and I've changed the password, however, it's practically impossible to change all passwords that are associated with that email. I've stopped using it but it's still associated with a few important websites, such as Bitcointalk, Steam and a few others.
What do you mean by targeted? because if we're talking about scam emails, changing your password won't minimize them. In fact, once your data is out there, there's no going back.
or are you worried about people bruteforcing their way into your email and its connected accounts? if so... let's say your email and password from example.com was leaked, then the perpetrators would easily be able to access those associated accounts that are using the same leaked password or easily guessable ones.
So you should be fine long as you maintain unique and strong password for each of your account (generated thru a password generator). and if you can, pair them with a secure 2fa method like TOTP, that way, the perp wouldn't be able to do anything using the mentioned leaked data.
However note that scammers would still be able to send you phishing emails hoping to catch you off guard. I would also look into any weak points of websites you use such as being able to reset your password using SMS codes/2fa which has been pretty insecure.