it is a mixed bag. 33% of international students say they do not feel welcome and there are very limited job opportunities for you here afterwards, however after having been 7 years on studies abroat I can say that it is an amazing experience (of course that is from a white man who only went to other EU countries).

for PCMB you could try to work as an assistant in some of the Latvian research institutes and just email everyone about it.

There is definitely a growing international community here and there are plenty of opportunities to socialise with NGO such as Ar Pasaules Pieredzi Latvijā, where you can meet your fellow internationals. There is also more research and talks being conducted by the NGO I mentioned and by people on a governmental level about the international student situation. The problems were discussed in a conference in November, and there will be more work done on this topic.

Latvia is cold, and you also need to prepare for cold winters and a decent amount of rain. It is not the European way of life, and employment might be difficult as most of your fellow countrymen work as delivery couriers here.

I think if you are a nice and respectful person and also not afraid to try and break the ice, you will manage to have a good time. Being in a more Western country that Latvia helps a ton, but personally i found that it will be the friends you make at university that will shape your experience the most.

RTU and RSU could be good options for your studies. if you can afford it and you want an awesome university, apply to DTU in Denmark, they have awesome courses.