How can I create a real legal contract with my own

How can I create a real legal contract like this for every client

greement (Hereinafter "Agreement") is made on this day of 02/27/19

Between:
 
Me under the laws of the State Of New Jersey
(Hereinafter "Contractor") 
 
And 

client

(Hereinafter "Customer")

Service to be performed at:
 Solutions LLC
1500 Meadowlands Parkway 
New York NY 07094

I  agrees to provide all equipment, products, supplies, & labor for the completion of the cleaning at: Solutions LLC
1500 Meadowlands Parkway 
New York NY 07094

Done with odt templates. Thank you