Consider the needs of the breed / breeds you are getting, excercise , training etc.
In the last 24 hours I have met a couple who bought 2 adult labs on Gumtree and were baffled as to why my lab was " slim and well behaved" ( their words) and theirs were obese and hyper. They had been told by the seller that 10 mins playing in the garden was sufficient excercise 😤.
We had a good chat and I pointed out that my dog was not slim but a healthy weight and that without a couple of hours excercise a day could be an arsehole. So I am pleading with anyone considering bringing a dog into the family do your research .