I don't know what to think..😔

This may be a long post but please bare with me. I have an almost eight month son. I'm gonna preface this by saying that I love him to death and I'm so blessed to have him. But sometimes I feel like I'm not meant to be a mom. I just have these feelings of inadequacy, like I can't do anything right. And sometimes I have these thoughts that he would be better off with a better mom. I hate these thoughts so much. It's very hard to explain but I just need to know that I'm not alone. Thank you ladies.