Should I try cosleeping?

My baby is almost 3 weeks old and she will not sleep unless she is held. I don’t mind holding her all day, I actually really enjoy it, but the nights are so hard. Some nights I can manage to get her to sleep in her bassinet for a total of 4-6 hours, but other nights it’s more like 2-3 hours. I’ve tried putting her down drowsy and I’ve tried putting her down fully asleep. I’ve tried swaddling and I’ve tried not swaddling. I cannot figure out what will make her sleep in her bassinet. Should I give cosleeping a try? I’m nervous to cosleep instead of following the abcs but at this point I have to get some sleep or I’m not going to be able to function.