EEA family permit refusal - How to satisfy officer with my circumstances [closed]

I am Pakistani Resident and my Brother is an EEA with pre settled status in UK. I applied for EEA Family Permit along with my Family (my wife and two sons) and got a refusal. Although i did provided my brother's birth certificate. The decision in the letter states below:

The Decision

You have advised your EEA sponsor is a Dutch national. You have supplied a Dutch passport as evidence.

NOTICE OF IMMIGRATION DECISION In compliance with the Immigration (Notices) Regulations 2003 made under section 105 of the Nationality, Immigration and Asylum Act 2002 REFUSAL OF EEA FAMILY PERMIT

• On your application you state that your sponsor has resided in the UK since 15 August 2017 and that you are financially dependent on them. As evidence of this you have provided various money transfer remittance receipts from your sponsor to you, however, it is noted
  that these transfers are dated immediately prior to your application
  (within the last 4 months). Unfortunately, this limited amount of
  evidence in isolation does not prove that you are financially
  dependent on your sponsor. I would expect to see substantial evidence of this over a prolonged period, considering the length of time your
  sponsor has been resident in the United Kingdom.
• You have advised your family has only recently became dependent on your EEA sponsor due to a loss of income. We would not consider this
  as a dependent as this is a recent and possible temporary situation.
• In addition to money transfer receipts, this office would also expect to see evidence which fully details yours and your family’s circumstances. Your income, expenditure and evidence of your
  financial position which would prove that without the financial
  support of your sponsor your essential living needs could not be met.
• As evidence of your relationship with your sponsor you have provided a NDARA family registration certificate. Such documents are not accepted as proof of relationship as they are produced based on information given by the applicant. Therefore I am not satisfied that you have provided sufficient documentary evidence to support your stated claim that your sponsor is your brother as claimed. The department would expect to see your birth certificates for you and your sponsor to establish this relationship.
• On the evidence submitted in support of your application and on the balance of probability I am not satisfied you are dependent on your
  sponsor. I am therefore not satisfied that you are an extended family member in accordance with Regulation 8(2) of the Immigration
  (European Economic Area) Regulations 2016.

I therefore refuse your EEA Family Permit application because I am not satisfied that you meet all of the requirements of regulation 12 (see ECGs EUN2.23) of the Immigration (European Economic Area) Regulations 2016.

I did provided an Official Government Document detailing about my family tree, although i didn't provided my birth certificate. Now my question is how do i provide evidence about me and my family's circumstances, as stated above about my income and expenditure, as i have lost my job and i am totally dependent on my brother.