What problems did you face as a mother raising your baby?

Hi everyone, first time poster here. Not a mother though!

I'm doing research for a school project on baby care, and thought what better place to ask for help than a parenting forum! It'd be great if anyone could leave me with any information that'll help me out.

I'd specifically like to know what types of problems you faced/are facing as a mother raising a 0-2 year old child. My research also leans towards the issues you faced with things such as baby bottles, of baby feeding, but is not limited to this.

Thanks in advance to anyone that helps me out!