You don’t know Tavis Ormandy? https://en.m.wikipedia.org/wiki/Tavis_Ormandy
His article confirmed my suspicion about any Password Manager, even Bitwarden and I never have or will use any Password Manager. I create all my Passwords individually with my own algorithm in my head and can always recreate them.
Dozens? Dude, I have over 700 passwords in my password manager ever since I started using them 15 years ago. No way I can remember them all.