If you are serious about going to East Asia to geomax for sexual reasons, I will not shame you for it but will question your choice of location. If you are a hyper-aggressive loud dude, you may have much better luck with Japanese women than I do generally, and I speak some of the language. However I am generally introverted/chill and ones that want western dudes do NOT want that, they want you to be like the caricature of a western scumbag. Ones that do not like westerners will rarely like you, unless you are like a successful local politician level of integration.
Women are definitely friendlier than in Western countries and it's possible to have conversations that are not about hot topic political team stuff, even with terrible language skills you can have conversations like human beings used to have 20-30 years ago in daily life.
However you will still need to be very attractive if you are expecting lots of sex in places like Japan or Korea. China is probably a different story. Southeast Asia is still possible although you will feel like a complete douche being there amongst hundreds of thousands of other horny useless lonely dudes competing for the same small pool of western-lovers. A niche of western-lovers.
That's what it comes down to, it's not just prostitutes contrary to what everyone expects, but there are women in certain places with niche interests. You need to fit that niche. Very seldom is just being a western dude of normal height good enough. Keep in mind the women you will be with will more or less fetishize westerners, her language ability didn't come fresh from a study app but from many years of sleeping with other westerners. You will need to play the part. If she wants a loud guy who screams racist stuff and loves American football, she does not want you to pretend to learn her language and have good local sensibilities (but you better be able to know your way around still, as not being hip is still a turn-off).
Just a warning that East Asia is not a sex heaven for average western dudes...at least ones that are not loudmouths, I have honestly seen many clueless assholes who are not very attractive do well, so try being obnoxious if it's in your ability.