The first choice for viewing a house should be a second-hand housing intermediary company, where there are more houses, and the intermediary can look at some relatively large, reputable and influential intermediary companies. You can also look at the intermediary company attached to the lot you want to buy! Houses are generally registered in intermediary companies near the house.
Of course, you can also look at local real estate and your relatives and friends online and ask them to help you ask other people you know if they have good houses for sale!
You can also go to the community to see, and some communities may also help the householder register the seller!