Where to find runes?

Excuse me, could you possibly assist me in locating runes? I've been searching high and low for these ancient symbols, but I seem to be at a loss as to where I might find them. Do they exist in physical form, perhaps hidden away in some ancient tome or artifact? Or are they perhaps more ethereal, residing in some digital realm that requires a specific knowledge to access? I'm eager to learn more about these enigmatic runes and would greatly appreciate any guidance you could provide.