I use Bitwarden to store passwords of about 32 random characters (unless there is a restriction for fewer characters).
My main problem has been writing those long pwds on devices like TV sets, or guest mode PCs, where I can't easily copy them.
Some shortcuts have appeared like scanning a QR code or inputting a single-use code. But it seems will never become a standard.
For those cases I use a sequence of 5-8 words to have 'more entropy' in a simple way to input it. But... ¯\_(ツ)_/¯