I try alot of Guides but no one from this guides work with me
Your question is more Ubuntu-specific rather than Scaleway-specific. You can try to google “vsftpd ubuntu” to find the answers you’re looking for (assuming you want to install vsftpd).
Anyway, I successfully installed a FTP server for the torrents InstantApp. You can give a look to the
/etc/vsftpd.conf file. My updates are at the bottom of the file, though you’ll have to read the corresponding manual to change the settings according to your needs.
(and btw, iirc.
apt-get install vsftpd will allow you, by default, to have a ftp account per UNIX user)