I need help marketing my childrens books

My name is Geoffery Moore. I've self-published two fantasy novels for early middle grade kids (roughly ages 8-12). I'm an independent author and need someone who can help me develop a cost-effective strategy to find an audience for these books. They are both on Amazon now, but due to Covid have not yet received marketing support. See info on books at www.GeofferyMoore.com.