Flamed every time I try a new character

I've been a 3-trick for years. I play Eve Janna and LB. That is it. The reason is that I have played them for so long, that I feel it would take months to perform at the level I do with any new character, and this community is brutal with people who aren't already playing at a plat+ level on their character.

After Eve's rework, I decided I needed to expand my roster, and had to re-learn Eve as well.

So I made a smurf account since I would be playing at a bronze level with these new characters. First game as Eve, flamed incessantly by team since I didn't know how her abilities flowed together. I had to endure 5 or so games like this before I started to get competent with her, but I ate several reports for 'trolling'.

Then yesterday, I decided I wanted to try Rakan in a level 20 game. I said to my team it was my first time, they said ok, my adc picked Xayah. We were against Jhin/Velkoz. I couldn't do anything. Xayah was sitting back by tower, and my W and Q were outranged by them. The xayah spent the entire game flaming me, then got the rest of the team to join in. They then sat in base, screaming in allchat for the enemy to kill me, revealing my position, etc, calling me a feeder/troll, when I had less than 4 deaths and a dozen or so assists.

I get it, the community is toxic. But I have avoided for YEARS going through this and having to sift through game after game after game of assholes who do nothing but flame, in a level 20 game, after the person SAYS they're new to the character and does everything they can to not ruin the game. You can't learn how a character interacts with people in coop vs ai, and you can't learn if actual people are fucking assholes and afk right off the bat.

Seriously, being a legitimately new person to this game is something I can't even imagine at this point. You're expected to be an expert with your champ the very first game you play them, and if you miss a single skillshot or die, expect the constant harassing ? pings and flaming the entire fucking game.

Honestly, if I didn't start in beta, when literally everyone was new, there isn't a chance in fucking hell I would put myself through this while I was trying to learn the game's mechanics, since there is always some asshole Yasuo smurf main who seems to love scouring low level games and flaming people for fun.