Being a foreigner in a country where a majority of people don't speak English or your language can be very stressful. That's why it's important to build your own social circle. In fact, a lot of expats tend to congregate together and stay in designated expat communities.
Thanks for an example of how payed pro-Kremlin trolls work.
To non Russian readers: There are a lot of propaganda sponsored posts like this on Russian message boards and Telegram chats.
The Russian society is split over this. A lot of people, especially the younger generation, oppose the war, some even go to jail for openly expressing their views. On the other hand, a lot of people support the war and believe the propaganda.
People routinely get denied entry at Poipet, but just a small fraction of cases get posted on the forum. Poipet is notorious for being the toughest land border. Even border run companies don't use it, although it would be closer to Bangkok.