My (21M) Ex (20F) drinking a lot since break up

Hi Reddit. My ex (20F) and I (21M) were in a 2 year relationship prior to me breaking it up because of an issue that was caused by her. We’ve been apart for about over a month now and no contact as well. I’m very very heartbroken even tho I ended it because I still love her. She being my first love and relationship. Since then I’ve been fully focused on my career and spending time with my friends whenever I feel sad because of the break up or just spending time talking about how we can further our careers. Her on the other hand looks (only on social media) like she took a complete 180. She’s partying so much and drinking too with this particular friend (I see this from her friends story on Instagram). It’s like I don’t recognise who she is anymore and I feel sad by it. This friend, who’s singe, I never liked as well and I feel that she’s the one who kind of misled her while my ex and I were in a relationship. I still love my ex and seeing her like that breaks my heart even more. I was thinking that I should message her friend to tell her to take care of her instead of being a bad influence any advice on that? Or maybe it isn’t even her friend that’s influencing her but my ex wants that herself because of the hurt from the breakup.