I regularly work with PDFs in my professional work. And I can confidently say that choosing the right editing tool is no easy task. I've tried several programs, but most are either limited in functionality or have an inconvenient interface. I recently discovered PDF Guru
https://guardian.ng/technology/tech/pdf-guru/ and I can say it's a real find. It combines ease of use with rich functionality: editing text and images in PDFs, adding and deleting pages and working with signatures and comments.