Casting from Android to Chromecast with subtitles

Hello all!

I run a jellyfin server on an old laptop. I want to cast media from my Android phone (jellyfin app) to my Chromecast. For this, I will also need subtitles because anime.

So far I have been using VLC as an external player but casting with subtitles is not supported. Switching to exo player / web player also seems to not allow for subtitles or at least it makes the media run poorly (blocky, needs to buffer, ...)

Anyone managed to get subtitles to their Chromecast? Learning Japanese sadly would take to long haha