Help pls ?

Since the beginning of 2019 I’ve been having a really really hard time. It feels like my life is just falling apart. My boyfriend of 7 months broke up with me and hates me, or it feels like he does. He was just my best friend and I just thought we would at least always be friends and I just don’t have anyone to talk to and I just feel really lonely. I keep telling myself that everything is going to be okay but I can’t take it anymore. I find myself crying everyday trying to calm myself down and I don’t know what to do. I constantly have panic attacks and I’m not sure how to control them anymore. It’s just so hard for me right now and I’m not sure how to calm myself down or just relax. If anyone could please give me tips that would be great :)