Hey derekfromcoleraine,
Welcome to Apple Support Communities. The information below may help.
When you set up a password on Safari, you can click "Suggest New Password" which will provide you a strong password. See steps below.
1. In the Safari app
on your Mac, when a website asks you to create a password, click the password field.
2. Click the AutoFill Key button
, then choose Suggest New Password.
3. A strong password is suggested for you, with a yellow background. To decline the suggested password, click the password field, click Don’t Use, then enter a password.
4. Enter the rest of the required information to create the website account.
If you have iCloud Keychain set up on your Mac, a unique, hard-to-guess password is automatically suggested when you first click the password field.
This information is also available here: Autofill your user name and password in Safari on Mac.
If you're using iCloud Keychain, you can access your password on all devices that has iCloud Keychain enabled and using the same Apple ID. For more details, click here: Use iCloud Keychain to keep passwords, accounts, and more up to date with iCloud.
Here's the article that walks you through setting up iCloud Keychain and iCloud Passwords on all your devices: Set up iCloud Keychain and iCloud Passwords on all your devices.
Take care.