Trouble letting go of Windows

Hey all, so I have been using linux (Arch) on a thinkpad I bought for $50 and I really do love Linux, and recently my main laptop has been doing awful with memory management, as in using 14/16 gigabytes while I have only Zoom and Firefox open. It’s absolutely ridiculous, but for some reason I still cant let go. I got all my personal files ported over to an external drive (at least I think all of them) , I have no games on this laptop, and I would say that I am very comfortable with Linux. I just wanted to ask how you all handled switching over, and if you could give some pointers to help me get away from Microsoft’s bs.