without a master password, firefox just uses a simple scheme it can reverse. if you use a master password, though, then that password is needed.
chromium browsers now use windows credentials, if you have no password on a local windows account, then none is needed to extract the passwords from the browser. .
Seems like I will have to find a way to move my vault to another password manager. I hope I can find a way of doing this safely without needing to do that manually... So I am grateful for any advice!
I moved from LastPass to Bitwarden. It was quite easy to move everything over. I've been using Bitwarden for several years now and have no complains. I believe Bitwarden has a guide on how to move your content from LastPass.
Edit: I use Bitwarden on both pc and mobile. No issues.
Most viruses now start off by scooping up all saved browser passwords automatically then sending them to a remote server. So if one of those ever goes off on your system you are at quite a risk. Especially since there are really good other options that aren't vulnerable to that