As a buyer I don't trust Paypal. They use dark patterns to try to get me to sign in, then make it hard to sign out, and for whatever reason my account is wedged and even though it has the correct payment details, the payments all fail. The UI is antiquated and the embedded version that has the animated progress bar GIF is sketchy at best. The Venmo app (which Paypal owns) is jammed with crappy ads and an often-broken UI.