I feel so alone

I’ve been in a relationship for 7 years married for 3 and have a 2 year old together. I feel alone. I’ve always felt alone. Like I can’t act a certain way because I’m supposed to be fun, confident, and independent. I feel like everybody had it together around me. Like my husband would be happier without me. I don’t think I’m a good person. I’m 30 and I figured I’d grow out of this mentality. I don’t want my daughter to me like me. I just need to vent