A garden is a genuine advantage, and it is also the reason people choose breeds that do not suit their household. Space solves exercise. It does not solve company, grooming or training.
What a garden actually solves
It makes toilet training easier, gives a dog somewhere to be during the day, and removes the need to walk in bad weather. That is not nothing.
What it does not solve
A dog left alone in a garden all day is still a dog left alone all day. Sociable breeds need company more than they need acreage, and a large breed with nobody home is not better off than a small one in a flat.
Fencing and gates
Check both before the animal arrives. A determined dog finds the gap within a week, and the first escape usually happens before anyone has thought about recall.
The two-season question
A thick-coated breed suited to Chandigarh winters will find May and June hard. A short-coated one will be comfortable in summer and need warmth in January. Neither is wrong; both need planning.
Ask before deciding
Tell us the household, the hours and the garden, and we will say honestly which breeds fit rather than which are available.