Experiencing silence after a relationship

I understand that it's often recommended to move on after a relationship ends, but our breakup wasn't particularly negative. Despite this, my ex continues to ignore my attempts to reconnect. I was the one who decided to end things, but that choice came after many efforts to improve his communication, which left me with little option. He claims he doesn't see a reason to talk now that we’re no longer together. I might be holding onto false hope, but I genuinely wanted this relationship to succeed and my feelings for him remain strong. Any advice would be appreciated.