Bafang actually launched a 3-speed automatic gear hub back in 2022 ... is claimed to be the "world's first e-bike featuring an internal 3-speed auto-shifting motor" The hub motor also provides ...

To achieve this the cyclist must always be in the correct gear, which can be tricky when ... documentation is available for download. Most bikes should be easy to convert, and [Jan] invites ...

I will go further and will suggest to use bike single handedly within first 2-3 months at-least. WIthin this first usage also try to press gear shifter smoothly. This is advice for any bike.