Reaching Platinum or higher playing only support, impossible?

Can it be done?

I consider myself a pretty good support. Especially with Sona, Janna and Leona

When the teams are somewhat balanced i can tip the match in my favour but when there's that 10/0 katarina in 5 mins as a support i just can't shut her down as she keeps snowballing. Or Zed or yasuo or whoever.

When i play other roles i feel i can affect the flow of the match much more effectively.

I got gold quite early this year. After 40-50 matches max i believe.

I start to find games at my elo incredibly boring. I often go around kiting people around the map with janna just to have something to make me have interest and push myself more to play better instead of going for the usual.

Edit: Also, i find it annoying that quite a few adcs don't match my playstyle. Often i have that adc that is too passive and just flames me to stay back and let him farm. Annoying as hell, Snore fest for me watching adc farm and ward. Really snore fest

I don't see any challenge when i play games anymore. And i don't feel challenged either. As funny as it sounds, i even play Janna Top as a pure nuker to get gold.

I know the usual response people give is "Git Gud" but yeah. I only ever hit the high golds with Katarina or playing mid in general.

Anyone reached plat / diamond with only support? And i don't mean point me to some insanely good pro player, give me a real life example :p

I don't take duo with someone as an answer. Nop. I mean Solo Q.

Platinum Solo Support where are you Senpai, please teach meeeeeeeee