I have been taking a break from cs:go but just started playing recently. The only reason is because I forgot why I quit.
Russians have taken over just about every server and I dont see a good reason for them to not have their own. They do not know that Discord, Skype, teamspeak 3 or even facetime exist, and therefore teamchats are strictly in russian. You can always mute them, but where is the fun in that? This is a cooparative game afterall. Only 3% of russians speak fluent english, 30% can communicate.

Imagine getting 2 russians on your team. Both have a 30% chance of beeing able to communicate in english. That leaves us with a roughly 10% chance that both of them speak english. This means that both of these russians are going to speak russian to eachother and therefore giving you more willpower to end your life. Every sane person knows that playing a strategic fps game with russians is just pure hell.

Not to mention Hackers, Griefing, smurfs, other non-english speaking countries (Language barrier), Free to play (more hackers) and the community.

The sane cs:go community only have 3 options; 1. Dont play. 2. Learn russian. 3. Go on private servers.
Sadly Valve can't fix toxic people.