Hi. I'm new to this forum and road bike. is it ok to ask a question here?

it's kind of sad story. Anyway, I have been trying to find a helmet that fits on my head.
I have looked online numerous articles/recommendations for a helmet that fits weird & large head.
Also tried some of helmets in local bike shops.

my head is flat back, long sides, pointy front.

It is like a triangle or saddle

Also circumference is like 58cm

I tried all types of large helmets and nothing feels right.

Any personal experience or recommendation for me??

Thank you