Why do people complain about this champion?

Hi, so I just played my first match against a Mel, and I'm gonna be honest, this champion is kind of really underwhelming. I'm not sure if it was just a bad matchup for her (Seraphine vs Mel), but the lane was pretty free. Her Q poke was really easy to avoid, I just baited it out at max range and then poked back at her, her W was easy to force because I had her really low to where she couldn't afford to take anymore hits, her E is pretty easy to avoid, and her R damage is actually really weak, I believe the R ap ratios as well are on the lower end. So why do people keep complaining about her and keeping her perma banned?

edit: i would just like to clarify that the rank this match was being played in is gm, so it's not really like a noob thing