If you're not using a password manager then you're mostly likely 1 data breach away from not knowing how many other accounts of yours have been compromised.

They're so incredibly easy to use, they're all basically free, and they are essential IMO. I personally use Bitwarden, before that was LastPass until they first got rid of any reason to use the subscription, only to then lock multi-device use behind the subscription (oh and they got bought by LogMeIn, who are a garbage company). Bitwarden is better in every way, so it was a win. Happily paying for Bitwarden, and would recommend it to everyone.