So my wife has a 10 year old low end notbook. 500Gb of storage (HDD), 2GB of GDR3 RAM, and an intel Celeron Processor N2806. It originally came with Win 8, then she “upgraded” to win 10 and after that it was pretty much unusable. I am talking CPU and Ram about 80-90% in idle, opening a browser got everything down to a crawl. She mostly used it a storage and brwosing, watching youtube and occasionally to write. So I (also a Linux newbie) finally got the time to install a newbie friendly Os (Fedora) and it’s so much better! I am Talking 20%CPU usage and 50%(?) RAM in idle.
I also got an old notebook, atom N260 32 bits, 3GB of RAM. I put a 128GB SSD, then I installed MX Linux with Xfce (MX21.3_386) and it’s usable for light tasks. Yes browsing heavy sites is slow, but everything else works pretty well.