Fed up of service based organisation

Hi all ,

I have worked with 5 service based companies and earning good at this point of time.I have total 8 yrs of experience and I want to join any product based organisation. Which set of leet code problems are minimum enough to crack a product company? Share some system design preperation sources.I am done with interview interview bench and project drama.I want to join a company where I can complete my task and go home without that timesheet tension.