Many ways to get a legitimate 12 month visa without investing 800,000 Baht (NOT $800k as you suggested)into a Thai bank account for the rest of your life which will basically be untouchable if you wish to stay.
Ask around Bangkok / Pattaya / Phuket there are various options for just a one off 30,000 baht payment and hey presto you have a 12 month Visa Stamp from Immigration 😅
There is no guarantee as yet if the 45 day visa exemption will continue after 31st March so it’s abit of a gamble if you going before then … just buy the TR visa to be sure of an extra 90 day total (60+30 days) and leave your worries behind 👍
I think there is a lot of prejudice against Russians worldwide and it’s made more evident when the media keeps saying Russians are carrying bags of money out of the country … so everyone wants a slice .
Try a Visa agent in Pattaya there’s lots who will help and no strings attached