Host blog as a subdirectory

Hello,

I have a static NextJS blog that I would like to host on the subdirectory of my main site. Like this: example.com/blog.

I’ve tried uploading the files and creating a location block like this:

location /blog {
     root /var/www;
}
// The inital blog page loads but the dynamic routes don't

However this doesn’t work when I try to visit something like exmaple.com/blog/post/post-title-here.

How could I configure this, I’m pretty new to managing servers so apologies if this is an easy question.