Addons for Russian movies



I have PMS on MacBook and NAS.
I use it to watch movies on my Smart LG TV ( I store data on NAS). Both are wired connected to TV via cables.
Yesterday I was able to setup Kodi on my RaspberryPi. My goal is to watch old Russian movies. I installed a few Addons and it worked fine. The issue is that RaspberryPi is connected wirelessly.
My question: is it possible to setup PMS similar way I.e. install/configure Addons and watch Russian language content?
In case it’s free and doable .... could someone please point me how to implement it?