I’m finding being a mom too hard

I’ve just gone back to work and honestly this is too tough. My daughter is 10 months old and I have an older child too but all my baby does is cry snd scream whenever she’s put down. She’s such a hard baby, so naggy and miserable and I can’t cope with her. I just get so angry and end up losing it and shouting and then I feel guilty but honestly she hurts my heart because I feel like a failure 😞 😭 help please