How would you say Happy New Year Everyone in French?

Happy neaw year is 'bonne et heureuse année' in French. When you are sending yor best wishes for the year, this is fairly common to write "je te souhaite une bonne et heureuse année" (person-to-person, familiar) or "nous te souhaitons ..." (family-to-person, familiar) or "je vous souhaite ..." (person to person formal, or person-to-family) or "nous vous souhaitons ..." (family-to-family). You can also write 'tous mes voeux / tous nos voeux pour...' (my best wishes / our best wishes for ...)