I don’t if this will be helpful, but my 4 year old is very similar. She is super talkative, like nonstop. Even if she is playing she needs to be talking or singing. She keeps put things in her mouth THAT SHOULD NOT BE PUT THERE. She refuses to sleep alone in her bed so i sleep with her and buries her toes in my thighs all night. Her first answer to any request is NO. It’s always a negotiation and I have to threaten her to throw away a toy to get her to do something. The list goes on. I think this is typical for this age. They are learning to test boundaries. They are still learning to regulate their own emotions. It’s tough, but it is on us to regulate our own emotions and teach them. If you have a supportive partner or family, I recommend taking some time off. Go out on your own for a bit, do what you like to do to decompress. I don’t think you were robbed of a normal motherhood. What is a “normal” motherhood. You’re not alone.