Why some friendships end after kids come into the picture

I really resonate with this. Since having a child, most of my time revolves around them. There’s no time for myself, no time for friends. The friends I used to be close with have slowly drifted away. I’ve been living like this for three years now, and while watching my child grow up fills me with happiness, there are moments when I feel lost. It’s like I’ve lost a bit of myself along the way. I wonder if anyone else has felt this way, and how they’ve managed to find balance between being a parent and staying connected to who they were before.