Chrome has a feature to export passwords to a CSV file, but I had to enable it via a chrome:flag, so who knows if/when support for this will disappear. This created a bit of a sense of urgency for me, as Google aggressively removes features that they don't want to support.
My employer MITMs all web traffic, so I would never log into my Google account from work. They also have an ridiculously strict password change policy (every 3 months). But having a password manager on my phone lets me store passwords for my various work-related accounts somewhere, which makes each password change fairly easy, and also lets me log into certain work-related apps/sites (e.g. Slack) from home.
If you have multiple accounts on a single website, it's a bit easier to do in a password manager (at least Keepass or Bitwarden).
Chrome is a web browser, so it only remembers passwords to websites. If you have passwords that don't map to a website - e.g. hard drive encryption password, a pgp/ssh key, a wifi password), it's a bit easier to do in a password manager.
Some password managers have OTP generators built-in, which can be convenient.
