Is there someone who solves my subtitle issue?
Yes! Bazarr is specifically made to make this task completely automated. Other people have mentioned Radarr and Sonarr, there's also prowlarr/jackett for adding uploaders to grab from. I'm using this setup, along with overseerr to handle grab requests, and as soon as I click a button to request media it usually shows up in 10-20 minutes on the server with subtitles. If you're interested in setting any of this up feel free to DM me!
Alternatively some great folks have been working on something potentially even better that uses Debrid to speed up the time it takes for the media to be on your server: https://lemmy.world/post/6196363
I have barely looked into this and I really couldn't say anything for sure, but you might be able to use that+Bazarr to accomplish the same thing.