Career advice for a bachelor of biology with russian STEM diploma
You have so many questions, and it seems like you have no idea what to do next. So you better ask Russian guys who are really into this as 


Good FAQ with a lot of cases from real life:
https://vk.com/career_in_biology
More like Career in Biology 101:
https://vk.com/science_career (also they have a chat in Telegram)
Career adviсe and pretty decent list of positions: https://blastim.ru/
Winter biotech school (in my opinion you have good chances to get there as they do it for people just like you): https://vk.com/futurebiotech
Completeish list of biological summer schools where you can get hands-on experience: https://vk.com/coolresearch