Ok - I’m not entirely sure if you’re being serious or not …
Unless you badly need it as an extra layer in your bedroom or for house cleaning, the grey item is unacceptable and needs burning. It looks old, thin, shapeless, cheap, and has no redeeming features whatsoever. It’s not even a good colour on you, and doesn’t fit.
The t shirt is jarring and childish. It also looks old and cheap. It might be acceptable underneath a brown suede cropped jacket and tucked into a black leather pencil skirt, so all one would see is a black t shirt with some lettering. That would be ok.
The leggings / trousers - again look like house cleaning wear.
OP, an outfit needs to look as if at least one or two items fit you and have been chosen with care, or are at the very least lovely items in themselves, even if mismatched. Things don’t have to be fashionable but they need to look well cared for.
I am obviously only commenting because you have asked. I wouldn’t stop you on the street to decry your attire. I probably wouldn’t even notice unless it was somewhere where others were smartly dressed.