Download interrupts - how to enlarge download time

Hello Everybody, I have only a slow internet connection. So I can't stream the videos, I have to download the files and watch them after that. But even for this my internet connection is to slow. The download interrupts/timeouts. How can I enlarge the possible download time? (Libreelec 11.0.6 - Kodi Nexus) Kind regards, Tobias