what does it mean when you don't like it when people act happy, look happy

I think the important thing here is that you’re aware of it and would like to change it. Speak to your doctor or therapist and I bet they can help you work on it. Being rid of that anger could only be a good thing - I wish you success!

It means you’re unhappy with life and think that others should be unhappy also.

First I'd try to consider the source. TV and online isn't "real" life. And if people are happy in public maybe it's they're happy people.
[i]Thoughts becomes things.[/i]
Want to feel shitty? Tell yourself things are shitty. Want to feel good? Tell yourself things are good. Even if it's a "lie." I'm pretty committed to the idea, which is supported by scientific evidence, that spending time in nature can instantly change a mood. Just something to think about.

public life is pretty much corporotized "public relations" meaning oficial PHONINESS..no smiles no purchase.

Theres yur answer.

Find a way to be different than that and u will maybe notice such others

I don't know if it's part of your personality disorder but I think it's because you're miserable. Once you change your mindset you won't feel that way anymore. Start with a daily gratitude journal and list 10 things you are grateful for each day, grounding yourself several times a day, and bring love and light into your life through your crown chakra from the universe. Balance your chakras.

nothing, feelings don't mean a shit. Let them pass and prioritize.

Envy is a trait of narcissists