Whether you've been here for several days or several decades, listening to fellow expats, immigrants and other non-Japanese residents groaning about their dissatisfaction with their language abilities is nothing new. The advice I've received on how to improve, however, sometimes skews toward the exasperating.
I've been told (seriously) that speaking in archaic Japanese from the Meiji Era is the fastest way to gain respect from the locals. I doth protest.
I've been told, "See, what you need to do is date a Japanese chick." Bro. It's 2019. Cross-cultural copulation doesn't guarantee bilingual cred. You're going to have to work on that technique somewhere else.