@warrior-princess, good to know! I actually use Lightroom Classic, so my photos are all stored on my hard drive and Lightroom itself is not storing any photos. So when I run out of space on my hard drive (as I did recently), I just purchase an external hard drive to store older photos on and can still access those in Lightroom whenever that drive is connected to my computer.
If you’re using Lightroom (not classic), this article has a note at the bottom on “What happens to my photos if I exceed my allotment of cloud storage?” so that might be helpful to read.