High ram usage while idle on a windows 11 pc

Been doing all of those things; nothing has had any noticeable effect.

I've done a clean startup, without anything starting automatically, and even then 40% memory is used just after startup.

Uninstalled all the software I could, played with the page file size up and down (windows had automatically set it to about 29gb).

It is a corporate machine, so some bloat exists, but nothing extreme in my opinion. I'm mostly confused about the 4gb that is missing from the Activity monitor, where do they go?

That is what happened to me recently, I added ram to my desktop. Mine came with 16GB, I added an extra 8GB to make it 24GB, and my usage hasn't changed much and it seats around 45% with chrome opened with 3 tabs and Microsoft teams running in the background.
Performance wise it does feel fine, especially because I used to have my computer slow for a hot second randomly before, and now after increasing the ram that problem hasn't happened. So Windows 11 will use as much ram as it can.

Well +40% is definitely not normal while having just Chrome and few utilities open with 16gb ram.. Have you tried looking at the memory usage on a clean install? (without keeping any of installed programs or files). You can also go to Services (local) by typing "services" on start and disable anything that shouldn't be running, otherwise download Process Lasso to see more in depth or add memory constraints. Be careful with windows services, if in doubt just leave them. Also, 9% GPU usage while idle is not very usual, specially on a gaming laptop. If you aren't watching videos, having games open or loads of widgets it should be around 0% to 3%.

Such noticeable ram issue may persist even if switching back but go ahead and try, just google "windows 10 installation media". How is it you say having just 10 days? Win11 is free forever to former win10 users and vice versa. You can easily just downgrade to win10 while keeping your programs and files, but again I'd recommend doing a clean install, then reinstall whatever you like while looking for what takes that much memory resource. If nothing works you may want to take a look at/replace your ram sticks. If your pc performance is so poor that it doesn't even handle with 3 programs at once then It should even be something else.

It's because windows 11 takes 4GB to run idle, the tasks are taking up another 4ish and laptops/some desktops have IGPUs which share system RAM. If you have a discrete GPU on desktop this wouldn't happen. Also it's never a good idea to have multiple game hubs running even in BG. Last note: Discord should never use that much RAM in BG ever.

same issue, 32gb, windows show 50% ram used, without any thing above 200mb