Have to reset password every time I login since recent update

It appear one is Resetting the Apple ID password which is a totally different matter.

Reset Computer Password  for the Administrator Account Password

Intel Computer

1 - Restart computer and immediately hold Command + r keys

2 - Top Tool Bar >> Utilities >> Terminal

3 - Type resetpassword as one word and no spaces

4 - Press Return key

5 - Follow the prompts and remember the New Password

Apple Silicon M1 Computer 

1 - Choose Apple menu > > Shut Down.

2 - Press and hold the power button on your Mac until you see “Loading startup options.”

3 - Click Options, then click Continue. 

4 - Top Tool Bar >> Utilities >> Terminal

5 - Type resetpassword as one word and no spaces

6 - Press Return key

7 - Follow the prompts and remember the New Password

Hi, charlie.taylor,

Thanks so much for stopping by the Apple Support Communities. If we understand, you're unable to log into your Mac until you reset your login password using your Apple ID. Then, you must go through the same process the next time you try to login. We are happy to help!

Based on what you've described, we would recommend following the steps outlined in the Apple Support articles If you forgot your Mac login password - Apple Support followed by If you can't reset your Mac login password - Apple Support.

If anyone else has access to your Mac, we would also check to see if they may be changing the password while using it.

Should you still need help with your password, please get in touch with Apple Support directly: Get Support.

Have a wonderful day.