Hello

I (31 F) have discovered that my brother (30 M) is deep in the mgtow movement and I don’t know how to get him out of it. Basically he was living abroad in Montreal for 4 years and came back home last August. I think that he got into it when he was abroad, watching videos on YouTube. What triggered me to investigate was an argument we had because he decided I was “talking too loud” with a very “high pitch voiced” and that I needed to “only speak when needed”. It was pretty surreal because he never used to be like that. He was very aggressive about it , basically saying that I was acting hysterical when I was just having a normal conversation with my other brother. I do tend to speak loud and laugh very loud as well but it was nothing that could warrant such a reaction. I dug a little deeper and found out from the YouTube app on our tv that he was watching mgtow channels all day (he is currently unemployed) . The few videos I watched are very scary. They seem to be very obsessed with hating women. I don’t know what to do to get through to him.My brother found some very disturbing comments he left on YouTube videos and showed them to my mom. In the comments he was basically saying the typical incel stuff of women deserving to be raped, destroying men because they are after their money... which is ironic because me and my sister paid for him to study in Montreal. When my mom confronted him he denied everything and left. Does anyone have any experience dealing with this with one of their family members ? I need advice on how to help him