I could be wrong but I think that 3rd image, is only showing ram being used, not the total available in system (You aren't using any of the free ram after all) So your user at 632mb is 32% of the ram actually being used, not including free ram
My PC shows me using 643mb on my user and 18% of used memory, that isn't even close to right unless its 18% of the 2.7gb I am currently using.
Your PC looks normal to me, windows 10 doesn't use that much ram to run itself, and that is just ram, its not looking at commitments which also include the page file.