Might be worth checking https://open-slum.org/

I like the simplicity of MPV and use it whenever I can. However, it does not work as a DLNA client, at least not natively. I keep VLC nearby for such cases.

This is strange. You may have already solved your problem, but have you checked your apt sources list that it points to the right source (stable / oldstable) or (bookworm/trixie)?

Related to this, there is a note in the release notes for upgrading to Debian 13: https://www.debian.org/releases/trixie/release-notes/issues.html#ensure-boot-has-enough-free-space

It mentions an increase in the minimum requirements for /boot partition.

Jurassic World Evolution 2