Do you guys pick civ in 1v1 ranked?

Just had a ranked 1v1 Runestone, Franks vs Chinese.

I went 4 stable castle knights all in(pls dont blame this build order, i am not good at remembering real build order and i know this one doesnt make any sense 11). But anyway, since the opponent planned to go xbox as I scouted early on, obviously I just won the fight right before his xbox massed up with the first several knights. Then I got into his base and kept raiding his base with light cav and knights, and soon he resigned, but ending up with something like 'you're just lucky', 'tryhard frank', etc....guess he got little bit tilted, 11.

and i was like, what? dude i didnt pick civ. I just selected frank, but I kept the random button on, that means if he kept that button on, both of us should get random civs other than the one we preselected.

after all, do you guys really "pick" civ in ranked? For "pick", I mean disabling that random button and select a specifc civ u want to play. Plus, what's the point of him blaming me over himself picking civ, as I am the person who actually made compromise for people who want to play random vs random.......