Having spent over 20 years learning Italian, I can assure you that the only way to become conversant in a language (in contradistinction to simply being able to read the language) is to sit with a group of others in the company of a competent native speaker and just talk. Duolingo, MemRise etc...
I have a 2017 65" UHD LG TV that I have tuned to the nth degree. I have to say that the image generated by 4K Blu-ray is just too eye-poppingly sharp to enjoy. Drop back slightly to 1080p and the picture is more like what I see in the real world. Perhaps some anomaly in my vision is responsible...