Define Empty Feeling Meaning

There's an actual word for this, but here's the slang. It's that feeling you get after you've completed a great video game and have nothing to do, or finish watching a series you loved, either TV series or on DVD. It's a feeling that makes you compile its ending, linger for more, but in all of it, you're still happy you've completed it.

when you feel sad & feel like you lost everything.
an emotion that isn't a great feeling. it's the opposite of happy and "life is good"

Feeling alone and depressed with no feelings but agony and never being happy, just blank

An empty feeling In someone is most likely them unhappy and them being unhappy they choose to help others to feel their happiness even if it’s false feeling.