If your processes require RAM, it’s fine to use it. Windows obviously has many processes like that and reserves lots of RAM.

A Linux system can also have RAM-heavy processes if you choose to install and run them. In that case, a high RAM usage indicates that these processes are functioning correctly. Conversely, very low RAM usage suggests that the system is running as intended, assuming you haven’t installed unnecessary applications.

While RAM usage numbers can tell you something about installed and running processes, they don’t necessarily tell much about system performance. High or low values alone don’t definitively tell you whether the system is running well or poorly.