how to backup project?

Can someone help me? my laptop is dyeing very soon and i want to save my project but i do not know how.
My laptop is 32-bits so i cannot use github. Any other program for this? maybe a tutorial

I don’t know if it is enought for you, but I save all my projects on a folder connected with my OneDrive, because I use 2 computers to develop, on this way I always have all the files on both computers, and at cloud.
Hope this helps.

make a package of your project in
Assets-> Export Package

after done make an account in google driver and that’s it. play your project there

Drag and drop all the folders and files to google drive. You probably do not need to save all of the files and folders. Unity can tell you exactly which files and folders are the minimum to save.