You will find nice people and potential partners everywhere. Even if only 1% of people are “your type” in a country of a few million people, that’s still tens of thousands of potential partners. I’d focus on other factors instead.

You enjoy the “culture” but not half the individuals comprising the gender. Reason and your (valid) feelings aren’t adding up. You shouldn’t make any major changes until you’ve more clarity. And, perhaps that clarity will come through the dating process.

Is your goal marriage or just dating?

If marriage, consider that anyone from B with whom you may otherwise find compatibility may not be comfortable in A.

If just dating, stay in B for a while. Date people and learn what you need/want in a partner. Treat it like practice for finding a partner—while respecting and being open and honest with the people you’re dating. Then move back to A when you’re ready to put down roots. Maybe you’ll be lucky and meet someone in B who is amazing and would like to live in A—has been there and is as comfortable as you there. Or, you move back to A and maybe broaden your preconceived notion of who is an acceptable partner.

Don’t rush anything, be prepared to adjust your expectations, respect the other person’s needs and goals.

It sounds like you’re from a culture/religion that is somewhat insular. Consider that there may be people outside your culture who will respect it and be compatible as long as you respect theirs.