Did you feel guilty for having a second child? Like your first isn’t getting the attention and focus they need and deserve?

I am far away from having to make the decision to have another or not, but i still go back and forth with it often. I love my daughter more than anything, and I know in the first 3-5 years of kids lives its incredibly important to devote as much time and attention to them as possible since they are little sponges and 95% of their brains develop in that time. I just worry if i had another even if she is 4+ that I won’t have the same close bond with her or that she wont get the attention she deserves. I also worry that having a small child while caring for a newborn could make me less patient with her and I refuse to be a lesser mom because of my decision to have another. I just want some input on how other moms have felt after going from 1 to 2 or if you decided to be 1 and done.