#9
1. Learn Russian as good as possible including slangs, culture related stuff -> no other way to inegrate or get accepted since not speaking the language properly will kinda rob you of your personality when socialising making you less interesting as a person

2. Go to university -> probs best thing you can do, I had friends in japan and spain who made plenty of friends this way and got the social feel of the area, also do NOT miss out on any event as irrelevant as it may seem

3. Get a corporate job -> probs best way apart from going to uni, lots of people that you might share the same interests with

4. Get enrolled in an activity that you like -> kickboxing, mma, dancing, drawing, arm wrestling, airsoft, football, anything. Will help you connect with people that have the same interests who will introduce you to more people

5. Join local communities/groups make posts and go to events.

6. Get a girlfriend using dating apps, you'd be surprised on the connections that might arise, from the steps mentioned above you might find other couples that want to go out

7. All of the above and never miss a single event

Socialising is a skill that needs time investment and gets better with practice, if you are unable to do any of the above just invest your time and effort into some other skill that might pay off and make you important, that will also attract people without directly trying when becoming successful in a domain/activity.