I'll just respond to the ones you named, and leave out the ones I have close to no experience with (or at least not enough to comment on them).
1. Finland, rarely toxic and decent puggers. Seems like they don't give a fuck about anything over there.
Finns usually don't talk much, but if you ever talk to them, you'll find out they're all really passive aggressive and kinda dicks.
3. Spain, chill people tbh, rarely have problems with them.
Agreed, as few Spaniards as I've actually played with.
4. Sweden, more often than not communicating and trying to win, very toxic towards other swedes.
I have a few Swedish friends that I sometimes play with, and THEY are pretty cool. Swedes in MM are dickheads, though. Toxic and super full of themselves.
6. Poland, you'd think this trash country would hold a cancerous community while it doesn't
The enemy team always has a 30+ fragging 5 death god who just rips through my teams, and my team's Poles are almost always bottom fraggers. Their attitude can either be really cool, or complete dickheads.
10. Portugal, you can see being little brother of spain hurts these guys, so mad all the time.
I've played with a few portuguese players, and they've honestly almost all been really cool guys. I'm surprised you say they're mad, 'cause they're one of the better nationalities I've come across.
11. France, cancerous accent, cancerous attitude, cancerous players.
I don't know if I'd be this harsh, but pretty much, yeah.
12. Denmark, i liked the danish til csgo, it's like they put some autism sauce in all the polse from 2012.
Considering their pro scene, they're...terribly average. Players usually are just average, rarely any gods among Danes, and they're reasonably co-operative.
13. Germany. How can a good country have so many toxic shitheads with no brain?
EIther complete gods with no regards for the fact that they shouldn't see through walls, or super shit players who are nice. Most are sketchy as fuck though.
15. UK, I could pull of the sickest ace of all time and these yellow teethed dickheads would complain and cry
I have met a few really cool guys from the UK, but any I don't make friends with (which is MOST of them), holy fuck, yes, your description is spot on.
16. Ukraine, usually don't even talk. Just runs around with tunnel visions on kills. it's like they thought "play a game" on faceit meant "play a dm"
I have never met a single nice Ukrainian player. Ukrainians are, from my own personal experience, THE biggest dickheads in CS: GO (and yes, that includes Russians, and Germans, and Turks and whatever else)
17.Russia, it's like this nation strives to be braindead, i'm literally wondering if low iq means higher social status in Russia, please just give them their own server.
Yeah, Russians generally are either terrible at the game and complete shitheads, or they're bad or average, but nice guys. Rarely do I see a Russian who I confidently think is great at the game.