Hair Growth Remedies

I’m worried about my hair. It’s falling out. My hair is a bit layered and the longest is down to my waist now. Should I have it cut much shorter to promote hair growth? What’s the best hot oil formula can I use regularly at home? Is it good to apply warm virgin coconut oil on my scalp or olive oil

Pls if you have tried them pls let me know if they really work to grow your hair, for new growth and to help them from falling out. And how long does it take to see results.