Assuming this email is legit, the best thing that you can do is change as many of your passwords as possible to be unique and complex. You may also want to consider deleting old email addresses and getting new ones. Alternatively you can separate your emails addresses by having one for signing up for spammy services, one for personal stuff, one for work/school, etc. Try not to have much overlap between them all.

Edit: I also highly recommended using a temporary email for signing up for stuff whenever possible. I always use this one , but there are plenty of others too.

This breach is worse than just a website's database being leaked. These are info-stealer malware logs. Meaning that you had malware on one of your devices that recorded you typing your credentials into websites and then the logs of that malware were publicly leaked.

Before changing all of your passwords (and setting up a password manager if you don't already use one) you need to identify which of your devices was compromised and wipe it.

If you change all your passwords from the compromised device then the malware will just record all of your new passwords.

Password manager, and use different randomly generated passwords.

The real danger is having the same password everywhere.

Also pay attention to where you save your payment info.

Everything I do online is through Privacy.com, with limits for each vendor. My amazon gets hacked? Most I'm out is $100, steam gets hacked, there goes $60. A subscription tries to double charge, lol no. Free trial wants to auto-bill me after 7 days, its not happening. Funneling everything through them isn't 100%, but at least they're not paypal, I get notified when ever even a 1 cent charge happens and I'm not leaving my bank card on a dozen random sites I'll eventually loose track of.

Start changing passwords mon ami

Get a password manager and just start going from site to site and change em up. Use strong ones and store them in the pass manager. Start with critical ones like banks, email accounts, and government stuff, and then keep going..

Change your password, and hopefully you don't use the same password across multiple accounts. Since you're asking, I assume you do. (Not shaming, just informing)

It would be best practice to use a different email and password for every account you create, and enable MFA. Email aliases work great for this, and use unique randomly generated passwords for everything. A password manager will help you create, remember, and fill these fields for you so its not cumbersome. There are many good ones, I personally recommend Bitwarden. You can get pretty far with their free version, but I recommend paying to get the authenticator built in, so you can auto fill MFA codes.

If you can't afford this, or want to keep the codes separate (not all your eggs in one basket) then download the Aegis authenticator app. Its free and very good.

Change your password(s).