I don't know what to do

Have prom coming up and I literally have no one to sit with or talk to... Everyone hates me or feels uncomfortable around me. My only real friend going is in a group already at prom so I'm alone. I'm just so tired of being like this when everyone else has someone to always be with. I want to go to prom but I dont want to be the random person no one likes sitting at their table. There's meals occurring at each table. I don't know what to do anymore. Anyone got any ideas of what to do? Has anyone else experienced this? BTW it's 6form leavers prom and from UK so I guess it's different compared to places like America