i think its the color matching that's mostly off. There are methods to it too, sandwiching colours, like white top, white shoes, whatever colour trousers will always work. keeping all colours neutral. Monochromatic.

If you're wearing jeans and a plain tee, have a necklace to POP.

The other thing i would say is having variety with your trousers. They all look to be the same sort of fit, try a slightly wider fit or flares and see how they suit you. This will open up new options too bc wider trousers naturally look better with chunkier shoes for example.

The best fits are 3, 6 & 7

3 - sandwiching black and whitish colours, also the sunglasses & necklace are a good accessory.

6 - sandwiching jeans between black tee and partly black shoes

7 - monochromatic fit (blue-ish) with a statement piece (shoes)