If you do find a texture you like but it's not seamless then you can try this: https://www.imgonline.com.ua/eng/make-seamless-texture.php
It'll do a reasonable job of making it seamless/tileable
Nice find. I've had decent success with Materialize (see below). Usually when I find a tile or laminate pattern a client wants and I want to (try to...) make a better PBR out of it. Most of the time, I find the seamless stretching feature the most useful. It's basically blurring between the seams to varying success. But in a pinch it'll get the job done.