Flaming/toxicity and overall rage.

Hey lads, I'm an high gold player ( which i know isn't really good but i'm playing to have fun and improve ) but my major problem is raging. I've been watching videos on how to avoid raging, i've been focusing on not being toxic and during the majority of my games im possitive, even if the team stats are like 10-40 and i'm the only one doing decently im still like " Guys it's cool, just farm and we can do this >:D " or something like that but then...here and there..it just snaps and i turn into some toxic monster, i legit flame the living hell out of everyone and then i get a chat restriction or account suspension and i really want to stop raging but i just cANT STOP. I feel so bad over myself and ashamed but i just cant help it. I recently got a 14 days suspension and it's not that i dont realise that it will lead to a perma suspension but I just cant help it and this is really a call for help..any kind of TIPS or anything to stop raging would mean so much! And no..I can't just " stop raging " because it always fails at the end, i eventually just snap and start flaming. I love LOL, i love you guys, i even love the trolls because there is no better feeling than carrying trolls and proving them wrong but when i perfom good and someone ruin a 10+ winning streak just because they first time azir mid and go 0/13..I just can't hold it. Thanks and please avoid the mean comments.