My daughter won't go to sleep I don't know what to do.. I already fed her 4 oz, changed her diaper 2…

My daughter won't go to sleep I don't know what to do.. I already fed her 4 oz, changed her diaper 2 times, put her on my chest and patted her butt, put her in the bouncer, tried putting music on, tried thunderstorm noises and tried bouncing her, tried rocking her, tried putting her in the swing, already tried a warm bath nothing is helping...this happens every night. I'm exhausted, I barely can take showers or eat, whenever I try to eat I don't eat it all cuz I loose my appetite..I don't know what to do anymore, my SO works 12 hours and I try not to bug him so he can sleep if he has work the next day and if he's off he helps me with her but he's been working alot lately... I don't have any family near me to help me...I am not sure what to do...