LastPass has a tutorial video that shows you how to only use them for autofill: https://www.lastpass.com/features/autofill/iphone
Other password managers do, too: https://bitwarden.com/help/auto-fill-ios/#keyboard-autofill
Whenever LostPass, I mean LastPass is mentioned, it makes me feel twitchy and reminds me of that time I made a really bad tech decision of using it.
LastPass is not a secure place to store your passwords. Bitwarden is the second worst place. Don't just take my word for it, do your own research.
If you need a tutorial for something that’s supposed to be as simple and transparent as a website authentication, your standard has already failed the usability test.