Every active Internet user has at least one account in popular social networks.
And to protect yourself from the risk of losing all accounts at once, it is recommended to use different passwords.
There are already many free and paid solutions: 1Password, LastPass, Keepass, etc.
Microsoft has released (https://techcommunity.microsoft.com/t5/azure-active-directory-identity/securely-manage-and-autofill-passwords-across-all-your-mobile/ba-p/1751710) own password manager, which is already built into the Edge browser.
With it, you can store multiple passwords in one place and sync between PC and phone.
To sync with Chrome, you need to install the Microsoft Autofill extension (https://chrome.google.com/webstore/detail/fiedbfgcleddlbcmgdigjgdfcggjcion?hl=ru).