I think that things are meaningless on their own so we are supposed to give them a meaning.
Sorry, but no. The only difference between “we” and “things” is the illusion of your subjectivity. Things are not “on their own.” You can’t separate yourself from meaninglessness, and any attempt to do so is merely an expression of your ego.
That’s all your ego does, really. It gives meaning to things, relentlessly insisting that you exist, right up until you don’t.