When I was in my final year of high school, two of my friends were 30% grey.
I covered my greys for years and then, when the borders were closing in Australia due to Covid, and all shops were shutting, we ducked into a barber's for a haircut...a female. She did the best cut ever and suggested I stop colouring. She suggested using a purple shampoo, and I literally never saw the greys grow out.
These days people stop me and ask who does my hair.
Personally I look at older women who do home dyes and they are never right.
I would NEVER ever dye my hair.