Is there anything worse that can happen to a guy than this? How do I move on?

I met my girlfriend two years ago on Tinder. We are from the same city, so things worked out well for us. We fell deeply in love and enjoyed every moment together. I’m not perfect, but I tried my best to be the right person for her. I never talked to any other girl during these two years except my female best friend (and even that friendship ended), so there was never a 3rd person involved. In these two years, I shouted at her only once. It happened in the heat of the moment, and I regret it to this day. Other than that, I genuinely believe I treated her right. Our relationship seemed fine. or so I thought. But yesterday, everything changed. When I sent her a 'Good morning' message on WhatsApp, it didn’t get a double tick. I got worried and tried calling her, only to realize she had blocked me everywhere. WhatsApp, calls, socials, everything. I was devastated. Out of desperation, I sent her a message through a friend’s phone, and to my shock, she replied, I don’t know him. Today, I somehow managed to speak to her. All she said was 'Main aapke sath pehle jaisi nahi reh paa rahi hu' (I can’t be with you the way I used to be). I asked her for closure. begged her to give me a reason, because I don’t deserve to be left like this without any explanation. But she blocked me again. I guess she was bored or who knows the actual reason but love is just going to be a myth for me from now. And now, I’m completely broken. I don’t know what to do. TL;DR: Katt gaya sayad!!