I currently have 110 unique user+password combos. I wouldn’t want to change all those even once, if I were breached and had used similar credentials everywhere.

Bitwarden keeps them well managed, synced between devices, and allows me to check the whole database for matches/breaches via haveibeenpwned integration. Plus because I prefer to keep things in-house as much as possible, I even self-host the server with vaultwarden walled off behind my own vpn, instead of using the public servers. (this also means it’s free, instead of a paid service)