Customizing Theme: Is there Beginner-user friendly?

I am in situation where I must customize and develop my own website but I am inexperienced with WordPress and not knowledgeable or skilled with CSS coding. I have been using a free WordPress theme but find it very inflexible. My sincere questions are: 1. Are there purchasable WordPress themes I could consider changing to that are very Beginner-user friendly that I can easily customize for appearance myself? 2. If there are such themes, please name them or give example(s) I can survey. I am in Philippines and at this time have no Web tutor or developer I can personally talk to. I seek a possible very Beginner-friendly theme that I could purchase to replace my current free WordPress theme at https://www.divineglorylife.com