SSDNodes RAM is not fully utilized
I have an "8GB RAM" VPS from SSDNodes. When I got that VPS, the RAM usage was ~7gb and CPU usage was very low. As a result, the VPS was really fast. But after 10-15 days, I found that RAM usage has come down to ~1gb and CPU usage has gone up, which has affected the speed of the website. I have not changed anything on my website.
I am not sure what is the problem. Can someone please help me. How can I fix it?