Hi
Just thought I’d add my two cents here to this conversation!
I’ve been in Japan now for just over 5 years, and am currently at about an N3 level. When I first got here my Japanese was… well, not good is putting it politely lol. I live in Sapporo though, so with it being a city it wasn’t the end of the world. But, having friends who live in the countryside here, I know their experiences were very different to mine. It is definitely true that the further you get from the city the more necessary Japanese becomes just to navigate through everyday life.
I’m also fortunate in that I came over here on the JET programme, so the school I work at has the responsibility of making sure all the official paperwork that needs to be filed with the government, e.g. tax information, and arranging accommodation etc. was taken care of for me. If you aren’t sponsored in such a way, living here without a very good grasp of Japanese is extremely difficult.
I would say though that it’s wonderful that you have a dream, and Japan is an amazing place. I would recommend watching lots of native TV shows, and focus as much as you can on vocabulary if you want to be able to get by day to day. Even if someone is using very difficult grammar to speak to you, if you can understand individual words you can usually grasp what someone’s saying based on context
BUT, I feel like all of this is not so useful for you at the moment, as getting entry into Japan right now given your circumstances would be next to impossible. Work visas here are not easy to get and usually require you to already have a job lined up from a company that is willing to sponsor you, and those companies mostly ask for you to have a degree and at least N2 proficiency in Japanese (not including companies that recruit English teachers, as 99% of the time they have no Japanese requirements). Of course, if you wish to come over as a student, it’s a different matter, but again, that requires you to already have a place confirmed on a programme of study before you come to Japan.
Most of all though, right now your biggest obstacle is Covid. The borders here are pretty much closed. For the most part, only those with non-Japanese people with special exemptions, such as those who are already residents, are being allowed into the country. For example, on the JET programme, even though we are government workers and the government has been trying to get more and more foreigners into the country to teach English in recent years, they have barely let any new participants into Japan now for well over a year. The Japanese government are being very cautious about new arrivals and reopening the borders, and with how slow the vaccine rollout has been here I can’t see things going back to anything like normalcy still for quite some time.
I know that’s a pretty depressing take on the situation, but I appreciate that you’re trying to get other points of view and thought maybe it would be helpful given that I have some experience here.
I do absolutely wish you the best of luck on your studies though. Learning Japanese is an frustrating, mentally exhausting, rage-inducing endeavour, but nothing in the world gives me more joy than when someone on the street starts talking to me and I’m able to throw back some random words and be understood. I hope Japanese ends up giving you that kind of happiness too
頑張れ!