Free file Archive plugins

[KangJL]

@anon9769594

what is the best free WordPress plugin to use, for speed of upload to InfinityFree?

Most likely none. Already mentioned here

WordPress WPvivid free plugin problem

Backup plugin do not work well on free hosting. Your account will easily get suspended due to CPU, IO usages etc. To do backup of your WP installation, you can:- or use Softaculous to do the backup.

Backup plugins tend to exceed hosting limits, causing suspension.
You never give up, do you?