Though I am using electronic toothbrush, gum redness is present. Why?

Hello doctor,

I went to the dentist before two months. He said that I had good teeth health and gum health. The only thing is for my front teeth on the top and bottom I developed a frayed appearance around the gumline. He said this was from too much gumline and toothbrush contact and that switching to an electric toothbrush would be my best. So, I did, however, change the way I was brushing. Less force, gentle and not as much on the gumline. I recently purchased an electric toothbrush almost a month ago and I do not feel like my problem has changed at all. They still have a frayed appearance and they make me feel self-conscious because I know how pink my gums used to be. When I look at them in the mirror they look red and a little puffy, but not really. It has been almost three months since that dental visit and I am not sure what else I can do to help my problem. If you have any suggestions, then please let me know. I was not told as gingivitis, just a mild irritation due to aggressive brushing. Have I done a permanent damage? It has been present for almost three months. I was taking Chateal birth control pill and stopped it a week before to see if this was a part of the issue. I have attached photos for your reference.