Silver 5 on main acc matched against diamonds and plats then banned for "inting"

Hi, I have been getting matched against diamonds and plats on my main acc for the past 3 days and all those games I keep getting reported for inting. I'm trying to play the game but obviously as a silver I can't beat a diamond and they will camp me to no end. Every time I try to fight them I die. So why is this allowed? Why am I forced to be matched against these high elo players and then forced into a ban because I can't do well? Ofc I ask my team for help but they trash talk me and report me instead of trying to help me with the game. My main acc is fresh silver 5 and I've been in low bronze for 3 years I think.
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