One way to get into home buying without having the necessary down payment is to find a seller willing to rent the place to you (normally a lease for some specific time period) who will agree to set aside and accumulate a small portion of your rent payment towards the down payment.
This is often called “rent to own”. It is somewhat similar to a “Land Contract” in that the owner retains title to the property, but the contract to buy the property is in the future, normally at the end of the rent/lease period. At that time, if you