What if it just wasn't meant to be?

I've been looking for a job since last summer off and on to have extra income for our household. After numerous interviews, none were successful. I'm starting to think it's me and that I'm not good enough. My husband has been able to support us since my firstborn who is now 7, about to 8. But now we have 4 kids. I've been helping my husband with his business and I'm assuming its been a great help to him. But what if I was meant to be a SAHM? Remote jobs I've been applying haven't worked out either. I don't know. It sounds like I'm giving up but I would love to support our household financially as well but maybe a job isn't the way to go. Advice please!