Correct
Happy New Year — Refers to one specific upcoming year; standard, accepted greeting.
Incorrect
Happy New Years — Implies multiple years; not how the greeting works.
Happy New Year’s — Apostrophe incorrectly shows possession.
I cannot wait to release my romantic music video for my overseas romantic interest. I will release the video this evening on @ClaysAfterDark. Please be in attendance, especially you, @lennaverse#lennalover69
@AlexanderHvass thank you for helping me run up that roulette money. We went hard last night hit big with the meditations and visualizations we were doing