There are very few laptops that don't come with Windows or OSX preinstalled. They are out there (like Chromebooks) but there's not a huge selection of them, and you have to hunt to find them.
Depends where you are. Last summer I ordered a laptop from Germany and there was plenty of choice, at least Lenovo and Acer machines were widely available without Windows (variably shipping with FreeDOS, or a console-only Linux env).
Saved a tidy sum compared to shopping locally. Just pay attention to KB layout.
https://www.thinkpenguin.com/
https://www.dell.com/us/business/p/xps-13-linux/pd
There are a few others. Its not really hunt, you just have to use a Linux laptop brand or find an OEM that sells bare notebooks.