Microsoft admits 8GB RAM is fine for Windows 11, after years of pushing 16GB as the baseline
(www.windowslatest.com)
Windows 11 with 16 also runs like hot garbage, so I'm not sure if it's a ram issue. I'm sure more ram helps, but I don't think it's the main problem. I've not used 8 GB in a while though, so maybe some updates really changed things.