I had used the built-in password managers in browsers for years when using Android. Since I switched to iPhone, I couldn’t be happier with Apple Passwords.
Don't marry yourself to the Apple (or any other large vendor) ecosystem. I use Keepass variants on my Linux and Android devices, it's absolutely terrific.
Yeah. Right after typing that I was reminded how much of a nightmare trying to recover access to an Apple account is. I recently had to do it for a friend and it was nerve wracking, there was a very real chance of being permanently locked out if you take the wrong step.