Digital Marketing Revamp

I am looking to revamp my digital marketing strategy and need an expert to help me improve my outreach. Specifically, I want to focus on social media marketing and move and upgrade my website from WordPress to SquareSpace. My main goal is to generate more engagement with the community and increase supporters by leveraging digital media platforms. With engagement and outreach strategies, I hope to make my digital presence more visible and in turn generate more awareness for my brand, a childrens charity in London.

Looking for someone with experience in these areas along with experience in paid and unpaid ads online.