Registration as a British citizen

[Caxtonjr]

Hello, would appreciate any advice.

I was born in the U.K. to a non settled mother and a father on ILR at the time (they were not married), unfortunately I've lost contact with my father and cannot obtain evidence from him but he's on my birth certificate.
Is there anyway I can still apply via UKF? Form T is viable but struggling with obtaining necessary evidence. Would leave to remain be the best option at this point? And if so what what type of leave to remain would be best?

[CR001]

How old are?

What is your full UK immigration status?

Do you currently live in the UK?

What is your mother's UK immigration status?

Form UKF is if you were born to a British father so it isn't relevant to you as your father only held ILR and was not a british citizen at the time of your birth.

[Caxtonjr]

I'm 22,

I'm not sure what my status is as my mum doesn't have legal UK status and I wasn't registered but my father had ILR before I was born.

I was born here, live here and currently still here