Why this game is not fun anymore (at least for me)

The reasoning for this title comes from 3 reasons:

1. For the last 2 months of the summer vication I found myself grinding for my rank in this game without enjoying it AT ALL. I am getting to promo's over and over again and lose the game because I got players who feed so hard that its impossible to get back to the game. I am a toplane main, playing garen and tahm kench. I almost never lose my lane or feed my enemies. I feel like the meta now depends of the botlane because if the botlane loses preety hard, like they fed a jhin or a draven to atleast 3/0, this game is OVER. Doesn't matter if you won your lane 6/0 or 8/0 the botlane will always dominate and win the game for the team. In this 2 month i'll tell you what happened to me- I went up to diamond 3, almost hitting diamond 2, then I got a lose streak and got back to diamond 5. Then, I went back to diamond 4 and back to 5 atleast 6 times, and now I am diamond 5. You guys probably think "damn, this guy is a hardstuck d5, he can't get higher then diamond 5 after 400 games in this season". I lost 90% of the times because my botlane fed them hard and we got no chance to comeback in those games. It's not blaming, it's the truth.

2. I remember I played this game since I was aged 11, when shyvana or graves came out (I don't know what season that was). When I started playing this game in season 3 (I think), I was pretty excited because that was the first real game I played that wasn't a game from a website, that was real. I started playing in the na server and I had 250 ms all the time and I didn't care. (because I didn't understand those kind of stuff at the time and it seems normal to me). I remember I played with my brother duo top, we went fiora and rengar to toplane with ignite and exhaust and that was A LOT OF FUN. I didn't care about my rank at the time and I focused playing and having fun with my brother because we were just kids. We didn't care about what people wrote in chat and just played the game. Back in season 3, this game was quick and fun, and you didn't even had the time to look at chat and care about what other people wrote to us about going duo top. Since season 5, my friends was in g5 and I wanted to get better at the game because I played it for a lot of time. I got to g5 at the end of the season with my brother (rip old fiora). At that time, NO ONE cared about the chat and what players wrote in it. I didn't even know that you can get a ban for writing bad stuff in chat, not that I wrote bad stuff back there. But, I got to season 7, the season who everyone hated the most, the first time I got frustrated at the game because the solo carry thing became a dream and was only in bronze and silver. Because of that, I begun to care about what other players write in chat and communicate with others because this game was frustrating at this period of time. I got to plat 3 without any punishment. But, there the real shit begun. I played a solo duo game alone, picked sivir and took deathfire touch accidentally. Because of that, I couldn't stop laughing at myself winning with this rune on siver. But, there was this j4 that made me so angry I wrote "kys" to him. Now you guys are probably going to write "writing kys is a trouble thing, people can react to it very badly", that's true though. But there is one thing you forgot to think about. ITS A VIDEO GAME. No player cares about what other players write to you (atleast I didn't) in chat, I didn't even know it was possible to get banned for writing those things, because things like "kys" was written every game, and no one cared about it. Even if I wrote it before no one told me "hey, you can get banned for that", AND IT'S NOT THAT CLEAR BECAUSE TELLING SOMEONE IN REAL LIFE "KYS" AND WRITING TO A PLAYER "KYS" IN A VIDEO GAME IS 2 SEPERATE THINGS. Back to my story, I got banned after that sivir game for 2 weeks. In this time, I asked riot games to help and tell me why I got banned. But, they sent me a bot that gave me "tips" how not to be "toxic" and not get banned, which didn't help me AT ALL. I tried to learn from it and didn't write a lot from that point on like how much I wrote in that sivir game. after the 2 week ban, I tried to play ranked again and get up to at least plat 2 in that season. Then, I failed 10 promos to get up to plat 2, and then got back to plat 4, now image how tilted I was. I went on another game, optimistic to get back to plat 3, but there was a j4 that flamed so hard I couldn't hold it any longer and flamed him back, then I got permanently banned from this game FOR WRITING STUFF IN CHAT. I can understand getting a ban for trolling or inting in such a way, but not by writing things to a flamer. Think about it, I played since season 3, helping this game to grow, spending money on this game, grinding for icons (I got like 100 icons from the events) and I bought all the champions only WITH IP(because buying champs with rp is a waste of money). I got so frustrated I made a break from league and played a real good game named wc3. After 2 months, I got back to league, created another account, got to diamond 5 blahblahblah. Now I am reformed, i'm not writing things like that in my chat. I still see players who write those stuff and even more trouble stuff not getting banned for it which makes me even more tilted and frustrated.

3. The new champions and reworks are broken a f, just look at ranked, all the reworked and new champs are banned because they are overpowered and no one wants them against them.

Please share you opinion on what you think, it will help a lot.