I actually sided with Wanda

I have a pet gerbil I adore. My wife didn't like it, so she had to go. The mailman discovered my wife's body, so he had to join her. A neighbor got too nosy about the fertilizer I use, so....

She wasn’t a monster she was a mother

To be fair, in the comics, she does end up going bad. There was House of M which the Wanda Vision show adapted and then after that she goes insane. So it's really the source material you are hating on. I do see your complaint though. Still, killing several people, trying to kill a little girl, and also trying to kill an alternate universe version of herself is all completely wrong. And if that was the only way to get what she wanted was to kill several innocent people, then she was wrong.

Meh! If the MCU is an infinite multiverse of worlds, Wanda is basically pulling a Rick and doing whatever she wants because good and evil are just constructs and nothing matters.

Of course she was a villain. Villains put their desires before all others, even at the cost of many lives. The motivation is irrelevant. She knew she'd cause chaos and didn't care, just like most villains.