I use bio oil and nothing. I haven't found a solution at all

I had used mederma gel in the past. Was considering laser at one point for my super raised scars, but decided against it. After using Mederma on my hip scars I did get it tattooed over (an image). I know some tattoo artists do tattooing that hides the scar that matches your skin tone (basically permanent concealer), but it’s a pretty specialized thing that someone has to know what they are doing. If you are getting them tattooed at all, make sure you go to an artist that is knowledgeable on that subject.