I am in damn trouble. I have completely forgotten my password of fb account. And I don't have access to the phone number I used there. Now is there any way I can recover it from my smart phone?
Please help me. I am in damn trouble.

Can't you click on the I forgot my password and then do it through your email?

Well I did not add any email there as I added a mobile number. But that phone is out of my reach now. I try clicking on 'no longer have access to these' fro my phone, but then I am asked to upload my national id.
I don't have one, as I am less than 18.
So I am stuck now.

Create a new account?

Hey no! I need to access this.
I hear fb account can be recovered by using close friends or security questions. Why did not I get these options? Is it because I use fb from my mobile browser?

Try this link and follow it and see where it ends you up?

https://www.youtube.com/watch?v=lk4OJotB6xw&feature=youtu.be

You have to contact Facebook, If the Forgot password link doesn't work for you, you will have to prove to them you are the account owner.

No, please tell me about why I don't find the option to recover by security question or trusted friend. How can I get the option?

Probably because you didn't add an email address.
Sounds like you are stuck.
Facebook puts in more and more security, because bitter exes try to get into accounts, for starters, and too many of them succeed.

Oh no! I am dead!

If you are so dead, then spend more time trying to remember your password. If you are so dead, then you must not use Facebook very much.
Why exactly is this such a fatal problem, and why won't you open a new account?

No, please tell me about why I don't find the option to recover by security question or trusted friend. How can I get the option?

If you don't get those options then you must not have set them up. Like I said you need to contact Facebook directly.

So doing from mobile is not the problem?

You're dead? hmmm....sounds like you have a little more vested in this than a simple FB account....you aren't maybe trying to hack into someones account, are you?

Basically, what you have been told here is about all you can do. If it doesn't work for you then you're out of luck.

So doing from mobile is not the problem?

It could be. You may see more options if you do it from a PC.