One of the major dangers and problems I have with passwords saved in a browser is that they are not encrypted, and also the fact that many browsers tend to auto fill login forms, as opposed to a password manager extension, such as Bitwarden, that starts in a locked state with all the data truly encrypted.
As a Québécois, one piece of software I really like is called Antidote, which does pretty much the same as Grammarly, without the online components, unless you pay for the subscription. It also works in both French and English.