I bet you watched the MCU in the Japanese dub with Bulgarian subtitles.
You lose, I didn't even watch most of the MCU, I stopped paying attention to what is going on with it around Age of Ultron, the last Marvel capeshit I saw was IIRC either the last Iron Man movie or the first Captain America movie.
Those I watched in a cinema.
I lost interest in cape shit a decade ago, with the only superhero movies I have seen since being Batman vs. Superman, the first Wonder woman movie, the Deadpool movies and the Joker.Ok, Deadpool is still Marvel capeshit, guess it was the last marvel capeshit I saw.
For the most part I have given up on live action stuff and Hollywood crap, oh and by the way, I literally learned English from watching movies on Cartoon Network, so no, I don't need bulgarian subtitles.
And for anime the situation with those is pretty bad and I usually use english subs.
Also, most bg subs are non-official, I even tried translating some for DS9 when I was a kid, myself.