Add a foreign culture and completely different dating practices to that, and you've got a recipe for confusion and frustration
When I came to Japan, I had two major problems.
First, I was massively INTROVERTED. I wasn't naturally good at first impressions and making friends quickly, let alone hooking up with beautiful, heart-stopping women. While I was comfortable around the few people I knew well, I was hopeless when it came to situations where I had to interact with new people. But I sorely wanted to have attractive women - even just one - in my life.
Second, I had NO IDEA how to attract and relate to Japanese women, who seemed utterly mysterious and distant compared to the women I had experienced back home. Smiles and laughs which seemed to indicate I was doing well with them ended up falling flat and I was left with nothing.
The only girls who were around me and would talk to me were older and uglier than the sexy high-value girls I desired. Often, it felt like they were just after me for free English lessons and cheap thrills.