Really bad recommendations, close to being random.

I tried https://i.pinimg.com/originals/24/fe/62/24fe62935d6052ff017c... which shows a brown t-shirt with round neck. Results include a tank top (first result), white shirts, button shirts, long sleeve, leather jacket.

Next https://i0.wp.com/bamfstyle.com/wp-content/uploads/2020/06/o... which shows jeans jacket and trousers. Half the results are women and include shorts and cotton trousers.

https://i.pinimg.com/originals/88/b9/9c/88b99c71b53c0cd57fd9... clearly a buttoned shirt. Results include t-shirts, checkered shirts, sweat shirt, a suit, a leather jacket.

The results are supposed to find similar looks, so not the exact item. So the colors, models, clothes everything in the picture will affect the results. Also the database is still growing.

Here's an example of expected results: https://imgur.com/a/Aa7mBfX

For the first image you posted, I'd say it's in line with what I expect at the moment: https://imgur.com/a/VCRw5pv