Assassin7

I think I have two main problems. 

The fist, is that fights are so short. I can't physically keep up with whats happening on the screen before either they're dead or im dead. That video you posted, I couldn't keep up with what he was even doing. I guess thats why tanks was the first game I became really good at, with its slow pacing. I've streamed in discord to friends who are good that are watching me and they're telling me to do things before I've even processed whats happening to start with. heck in some situations I even flat out lose track of where my own character is on the screen. 

The second problem is I just physically don't know what I am doing that is wrong. As in, I dont know well enough what the correct thing to do even is. I'm slowly, slowly learning and sometimes after dying or failing to kill someone that I could of killed I realise what I did wrong. while playing garen and having the aforementioned friend watching my stream, them telling me where and when to move helped quite a lot really.

Also, I've been playing garen, but of course he got changed with the last patch so now literally everyone is playing him, and the last 3 games I played garen I was fighting an enemy garen and just got buttfucked all 3 times. 

well it's like learning how to drive, or learning anything really

you need time to adjust and get comfortable keeping track of things, CSing is a skill that takes REALLY long to get good at because you have to watch all your minions and their autos to reliably get every CS (nobody's perfect, people talk about the ideal 10CS/min mark but almost nobody hits it below challenger) and once CSing becomes second nature you can start focusing more on the enemies movement

you also learn how to farm the full wave with combos eventually

not dying should always be your #1 priority unless you dying results in something more valuable, after that comes enemy HP/mana bar and position + summoners to keep track of, and then the minion wave, if you took a bad trade (learning when to trade also takes very long) then as garen especially you can just back off the wave and heal up, on other champs this generally means having to give up some CS since you risk dying if get to close to the enemy champion

the trickiest part is keeping track of other lanes and jungler positioning which is ganking and roams are so effective

Kolni basically wrote down every important aspect of your problem in his 3-4 long comments before but I can only agree with him on practice tool. There are a lot of champions who are only require a few basic combos to get used to (garen, darius, renekton, jarvan iv, vi, khazix, etc) but of course playing a tank will not be enough against the more complex champions because they can outcombo you easily. The best thing is just to play draft normal games one after another and you will eventually learn how to play your pool. I started with Riven and Vayne which was a fatal mistake per skills and combos because - as you wrote - I didn't even know what I'm doing in the first place.

So start with as many champions as you can play (free to play rotations primarily without speding any BE) and you will find a few you will like I can guarantee that.

Besides don't play ranked until you learned the basics of cs and such, long months passed until I even tried it out.

Nonetheless the game will remain toxic, even in higher elo many ranked games are just full of shit, if someone throws his lane they will get 0-24 flame and pingfest even if they were ganked 3 times etc.

The good teamplays are generally rare, the problem with LOL is that meanwhile in WOT you can carry for example in a Chieftain or 907 1v6 sitations from time-to-time in league this will be more harder as you get CC'd by 3 people and you cannot move and you will die again and again.

What I did was that I randomly added every better silver or bronze guy when I started to play hoping that they would join me in a draft or ranked to learn from them and I did.

As an addendum, watch "how-to-play xy champion" videos on YT, I can recommend Eternal Hero, he is an EUNE guy whom I usually play with, he is a DIA 3 but have the most insight into champion usage I have ever seen.

So just check it out.

As per on my view, after 3/4 years I started to like league really, because you have so many options and ways of how to play 1 champion and you have a large pool of them. Then you will discover combos with flash ultimates and such which will help you to deal with 1v3 or even 1v3 situations with more complex champions.

The game will remain complex but for me this is the reason I keep playing it and quit wot because I got tired of random ebr's and arty's etc. plus it got monoton and repetitive.

I'd argue that WG seems determined to kill all the history-fags with their crap games.

Because of WOT interest in tanks has gone down according to google trends.

Now, that might not necessarily be a bad thing; they're history-fags. Not historians. And most of them are deluded into thinking things like Soviet tank bad, or IJN crap, or USN FCS buffs the precision of their guns.

Soviet tanks are bad. 

The only ones who don't think that, are retarded soviets.