Hello yuriyuri. I know your intension is to be an English teacher but you don’t have to give up seeking other jobs.
A friend of mine is an Indonesian currently working/living in Japan with a spouse visa. When he came to Japan, he had virtually nothing. He had no money, no Japanese command, no qualifications, no descent work experience (he was used to be a musician working at a beach resort), no friend, no help from his wife’s family and his wife was pregnant. The last golden week he returned to Indonesia with his wife and a child with a lot of gifts for the first time after 5 years of hard days. He works in a small factory and lives in Kodan (public run apartment). His life is modest but he is happy with his wife and a boy who is going to enter elementary school next year.
It is presumptuous to advice you since I am native Japanese, but I am sure the ability to communicate in Japanese will greatly expand your personal connections and that is often the key to seize the chance.
I wish you good lack
