There are many errors, and not all of them can fit here.
Therefore, all solutions (with images) are
described in the article: Errors when installing
applications on Mac
Official updates may lead to loss of activation unless stated
otherwise in the installation
instructions.
To update software from this site, if available, download the new
version of the software here and
install it over (replacing) the version already installed on
your computer. This way, you will retain the
activation and settings of this software.
More details in the article: Updating pirated applications
For downloading large files, it is recommended to use any
download manager, such as FDM (Free
Download Manager)
For downloading from file-sharing services like Filen.io, it is
not recommended to use the Safari
browser. Use, for example, Google Chrome, or the aforementioned
FDM.
For downloading files via torrent (.torrent file), you need a
Torrent client, such as Transmission,
or the aforementioned FDM.
Remember that providers may block access to some sites (e.g.,
1fichier.com), so it is recommended to
use a VPN to bypass such restrictions.