Banned for being a beginner???

I don't usually do this badly, but I think it was my last game (0/16/0 or sth) that I apparently got reported and banned for 14 days (with an "automated review") for intentionally losing 😭. I think that that was my first draft pick game (been doing quickplay before) so that maybe had an impact??? And idek how, most people's masteries are hidden, but I'm on level 11 and keep getting absolutely destroyed by lvl 4's and 5's 😭😭. Is it a skill issue or are these new accounts for experienced players?? Anyway... ig I don't have to worry about it for a while. Just saw a similar post about a fellow noob getting banned for being banned so ig that it's not that uncommon 😔