How to find yourself after becoming a mom

I’ve been a mom for a few years now I have 3 kids and it’s like I just don’t know myself or what I like anymore. I feel like I’m just a mom. After all this time I feel like I’m not over my kids father because I was so attached to him and being a family and holding onto that idea that I just don’t know myself he’s having another baby now and it’s like after all this time I realize I was holding on to that fantasy because it was familiar and that’s all i knew. But that is ending if you ladies have any activity suggestions i am all ears or even just advice