Work making me depressed. Feel down in general...

So at work people i thought were my friwnds friends turned on me. The dont talk with me or walk with me to lunch. Dont say bye. I had a break down at work and they ignored me and kept laughing amongst themselves. One picks on me and ignores me but talks to everyone else. I no longer want to be friends with these people but i feel sad bc the isolation is alot to deal with each and every day. Im constantly looking for work bc i cant do this the environmentsucks ass. Its toxic. I hang on to this job bc my son needs therapy for hia austism and i can only work a certain shift which is why im here so long but my mental health is tanking. I feel like crying. Advice. Encouragementwelcomed. @Jenna: its thw isolationi mentioned above. Plus 1 picking at me and another would laugh in my face