I got tricked by a fake email to enter my username and pw and now I need to change my pw all over the internet. What would be great, since I use about 5 main passwords, is an ability to search Brave for those sites that match the password I stupidly gave up. From that list I could easily go to each site and update my password. It would need to be a matching search, not a like search. Make sense??
Next time use a proper password manager with 2FA or yubikey.
Use 2fa on indvidual sites along with basic passwords.
To your question, you will need to remember which sites you signed up with which password and change them (with password manager probably). You can use history or cookies stored in your brave browser to find these sites.
Also, start with most important sites like google, instagram, banks, etc.