Hair thinning. Diet was the problem.

Hi, My name is Abhishek and i have diffused thinning over my whole head. I have tried rogaine 5% for 3 months and it didnt work. I stopped using it last year because atleast i didnt see any results. Recently I got a hair cut and realised that the situation is getting worse, since then i have started taking follihair and becadexamin for biotin and b complex and also bought a shampoo ketoscalp. Now the thing is i am really confused because in feb and march this year I had good amount of hair. I did go on ketogenic diet in month of may 2018 so i think that can be possible reason but i was taking adequate greens like broccoli and spinach. Apart from them i was also taking almonds and walnuts. So i reallt doubt that ketogenic diet was the problem.