Well, if you don't want to engage with the world because it's horrible, then you could become a hermit.
However, human beings have evolved to seek company and be sociable, as that was obviously a good survival and reproduction strategy. We have evolved to be sad when all alone: people in the past who were happier alone didn't reproduce, and their lines have died out. Some are still happy hermits, but for the most part, if you withdraw from society you'll feel worse.
Some consider suicide, but while suicide "solves" your problem, it passes it on, hugely magnified, to the people around you affected by your death. Again, humans have evolved to be sociable and to feel bad about hurting others if they can help it, so that's why suicide is only an option for the very desperate.
So that's the very minimum point of making an effort: not to get too depressed, and not to spread the misery further.
And if you're lucky, you'll get a lot more than that. Love, cuddles, acts of kindness, fun, laughter. You won't find those here on this board, but go out into the street and within five minutes you'll hear some laughter.
Stop reading the board if it makes you feel bad.