Sims4 Legacy still not working

hello, i had just installed the SIMS4 legacy on origin and when it was done I saw the same SIMS4 but not SIMS4 legacy and when I click the game to open it Origin opens instead and it keeps telling me "The Sims 4 Legacy Edition is now required for players on older Operating Systems and Hardware." can someone help me please? and I tried your first step and it didn't work.