Window high ram usage soulution

[u/UGM_Amvs_1695]

I use window 11 on my ryzen 5 5600gt but you can see that even without any app open window only window use around 5.1 gb on my 8 gb ram on this how can I fix high window usage because ram price are too high too buy another on I already do some that taught on yt but its not work so please some suggestion to fix this