What are you having issues with? let me know maybe I can answer.I'm getting more used to Roll20 but have only used it 4 times. I have FG too but have found the learning curve steeper than I like. It is not clicking with me, I need a damn tutor. I've been looking at the The Foundry which has a few perks that beat the pants off both Roll20 and FG but it's not integrated as smoothly with 5e yet, although in time I think it will be. By the end of the year quarantine I assume
I have done videos on the topic. Mostly for my own players and when I barely know more than they did . I hesitate to recommend them as I did not know much about creating that type of content and they have more dislikes than likes. A lot of people dislike the length of the intros.