Can I cast protection with just chants

I had a baby recently and my baby daddy’s ex has always been hateful towards me even when I first got pregnant. She was sweet when I gave birth and complimented my daughter and then she turned hateful again….she purposely added me to customised story of her body shaming me, and talking badly about how any baby from my babies father would not look cute and would be ugly (ironically she’s 12 weeks pregnant with his baby though…) I don’t really have much time at all or the appropriate knowledge to cast protection spells for my daughter and I…. Can I simply just chant protections to ward off any negative energy ?