You can use Clapper for video consumption. Note that Clapper within PureOS’ Flatpak remote repository was not working when I used it last time, so here are instructions for installing it using Flathub’s remote repository instead:
In Terminal, copy and paste the following line of code, then press Enter/Return to add Flathub’s remote repository:
flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo
Restart your Librem 5, open Terminal again, copy and paste the following line of code, then press Enter/Return to install Clapper using Flathub’s remote repository:
flatpak install flathub com.github.rafostar.Clapper