I found this sweatshirt from Amazon! It’s part of a set with matching black pants. I couldn’t pull of the monochrome look, but I do like both pieces separately. (commissioned links)

Sweatshirt set — https://amzn.to/3ycnoys
Shorts — https://amzn.to/3mC7tXY
Sandals — https://amzn.to/3Bc9TR5