If you're memorizing your password, don't change it too often because it'll just confuse you and encourage you to pick easy to remember passwords which are less secure.
Change your password if you hear about a hack, or have reason to suspect your password got leaked. Otherwise there's no need.
If you have a password manager though, go off. Change it as often as you'd like.
(Also 2FA, unique passwords per site, etc etc etc)
Last week. In an effort to de-google as much of my PC as I could the only chromium based browser I have is edge. I used librewolf for general browsing (unlock) and Firefox for porn (unlock and no script). Librewolf has known issues working with YouTube which will cause even the highest speed internet to have YouTube be choppy AF. So I used edge for YouTube. But there is a known big in edge that logs you out of everything when you close the browser. And after a dozen times of 2FA logging in I just said fuck it and changed my Gmail password...and can't close edge of I want to continue to watch certain channels
Years ago. Google changes the ways to sign in more frequently. 2FA messages, authenticator, then confirming sign-in on a separate device, which now seems to have been standardized as passkeys.
In 2003, Bill Burr wrote “NIST Special Publication 800-63. Appendix A” -- a security document that recommended passwords be changed every 90 days, and have irregular caps and special characters. When asked about it, and the resultant trends in people adding !@#$%^&*() to the end of their passwords, Burr said something enlightening:
A couple of years ago. It's like 30 random characters generated by a password manager, and i have 2fa on. Far more secure than my silly emails warrant. There's not much there worth stealing.