Suggestions for Mac users about memory sticks

iMac 2017 model 7500, 570, SSD, memory 16G, usually simple office work (occasionally PS, FCP), enough for daily use, but switching applications always feels not smooth enough. Today, I upgraded the memory to 32G, and it was instantly different. I could feel it smoothly, and the smoothness of switching applications was as smooth as silk. macOS eats a lot of memory, so I would like to give you a suggestion: the memory should not be less than 16G as much as possible. If you don't believe me, try it.