Selecting random gives me Varian 75% of the time

It was funny at first, but because he’s a multi role champ, I end up getting him WAY too often and it’s getting really old now.
I don’t want to switch off bruiser role either because I love bruisers.
I don’t want to leave games after being given a champ that I’ve played to death, when the whole point of random select is to switch it up and give me some surprising selections to play with. It’s no longer surprising, it’s Varian almost all the time. Literally gone three evenings in a row, playing Varian back to back on random select.

I wonder if he needs an adjusted pick chance for random. Hopefully this is possible.
This is my fav way to stay in touch with my bestie after moving abroad, so thank you for everything else the game has brought me. <3