Memory (RAM) and storage (hard disk / SSD) are not related to one another.
View memory usage in Activity Monitor on Mac In the Activity Monitor app on your Mac, click Memory (or use the Touch Bar) to see the following in the bottom of the. Memory Pressure: Graphically represents how efficiently your memory is serving your processing needs. Memory pressure is. With CleanMyMac X installed on your system you will get a Heavt memory usage alert if your Mac is running out of free RAM. Just click on the Free Up button to release some of the RAM and speed.
That Mac has plenty of available storage. If you are running low on memory Activity Monitor can be used to identify the memory-intensive processes causing that warning.
View Mac Memory Usage Upgrade
To learn how to use Activity Monitor please read the Activity Monitor User Guide. For memory usage, refer to View memory usage in Activity Monitor on Mac.
View Mac Memory Usage Device
Once you determine the memory-intensive process or processes, a solution can be provided. WIthout that information it is premature to draw any conclusions, but the number one explanation for that warning is having inadvertently installed adware. To learn how to recognize adware so that you do not install it, please read How to install adware - Apple Community.