Adobe Lightroom on macOS : Manage cloud storage & Selective Sync

I'm using Lightroom and am getting a message that my cloud storage is nearly full. I would like to address this by only having some of my library included in the cloud storage and the rest on my hard drive. I can't find anyway to access/manage the cloud photos though. I've downloaded Creative Cloud and it shows no libraries. I've tried to follow the instructions about deleting on this discussion board but none of them seem to align with my needs/functionality.

I don't mind having some of my files stored on the cloud, but no need to have my entire library up there.

Here's information about my setup: 

Lightroom version: 5.3 MAS x64 [ 20220328-1357-45ff827 ] (Mar 28 2022)
NGL Version: 1.28.0.8
WF Version: 4.3 49e3245
VF Version: 0.1.36.2
HIL Version: 40405
Operating system: macOS
OS Version: macOS 12.1 (21C52)
Application architecture: x64
Computer model: MacBookAir8,2 / Intel(R) Core(TM) i5-8210Y CPU @ 1.60GHz
Logical processor count: 4
Processor speed: 1.6 GHz
Built-in memory: 8,192.0 MB
Real memory available to Lightroom: 8,192.0 MB
Real memory used by Lightroom: 919.1 MB (11.2%)
Virtual memory used by Lightroom: 3,426.4 MB
Memory cache size: 1,768.0 MB
Internal Camera Raw version: 14.3 [ 1072 ]
Maximum thread count used by Camera Raw: 3
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 290MB / 4095MB (7%)
Camera Raw real memory: 0MB / 8192MB (0%)
Displays: 1) 2880x1800

{Thread title updated by the moderator for better reach}