Need Help: Suggestions on Login Keepers?

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I didn't have the need to really keep passwords safe because I only use 1 or 2 passwords before. That all changed when I became part of Steemit and had an interest in cryptocurrencies. As of the moment, I had to keep numerous passwords that are pretty much impossible to customize or memorize. So keeping them safe somewhere you can sync or copy easily is the best option.

I've lost all my passwords twice now, all because things crash or sync fails. I keep them somewhere safe but I forget to do that in some.

When my Google Chrome crashed, I lost all the passwords I keep. It's a good thing when I installed Mozilla Firefox, I was able to recover and sync all those passwords from Chrome even if Chrome won't launch.

I've been enjoying Firefox since then but it lacks the multitasking features like what Chrome has since Firefox doesn't allow opening multiple users all at the same time, unlike Chrome (which can open an unlimited number of Chromes under different users/settings). I also used Firefox sync to keep everything in place and easily accessible.

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Recently, when I logged out of Steemit and tried logging back in again while in Firefox but my user ids and passwords are no longer showing automatically. It seems Firefox lost sync. I re-synced it but still, the user ids and passwords will not show up.

I will need to re-do everything and get back all those information from another laptop and resync every device I have. It's a hassle to do. So, this is where I need help with.

Does any of you know a good and reliable app or browser that syncs all my login information? Preferably compatible with a Windows laptop and Android phones.