@ayoub
If you have an old (well, not "ancient"), unused notebook, you might try to install #Linux #Mint and start from there. It's a learning journey, but there's not much to lose if you consider it an experiment, at first.
Assuming that you have enough time for experiments, which none of us actually has, unfortunately.
Try the Cinnamon edition first, and if your playing around with it shows it is excruciatingly slow on the old machine, try the MATE edition.
Don't go down the rat hole of investigation the myriads of available Linux distros ("flavors") first, that's utterly unnecessary for a sneak peek.
If Linux catches on with you, you'll probably develop an appetite for test-driving various other distros, and that's fine.
https://www.linuxmint.com