On the positive side - a) you are in your last year and b) you know what you DON’T want. I have seen expats that invest so much time and emotion into a country that they sort of force themselves to continue there even though they’d likely be happier back in their own country or at least somewhere else.
I haven’t noticed this at all. I work in Japan and a lot of non-Japanese tend to get together so I have friends and acquaintences from the US, Canada, France, UK, Turkey, India, Australian, NZ, and Cambodia in addition to Japanese. I have never noticed any difference.