Do you have a stud finder? You might be able to use it to scan vertically for fire blocks. I watched a video along time ago where they drilled through fire blocks using something similar to this:
https://www.homedepot.com/p/Klein-Tools-3-8-in-x-72-in-Flex-Auger-Bit-53717/203871767
That is one hell of a bit lol
I do not - was tapping the wall trying to find it but I could not tell if there was one or not, might have to buy a stud finder
I bought my house about 1.5 years ago, and one of the first orders of business was running CAT5e (with a bit of CAT6 for the 10G runs). I have a finished attic and a finished basement, which made it incredibly hard to fish cables through the walls. Ultimately, I just ended up buying outdoor-rated cable and routing it all externally along my siding. No issues so far. Prior to this, I lived in a rental and had the same setup. The outdoor cable lasted for 6 years with zero issues.
Running it in the walls is certainly cleaner; just figured I'd offer an alternative.